As hopeful as such thinking as summarized in the above quotes may make some people, I note that previous Roman Popes -- writing long after Vatican II and surely aware of its spirit or what have you-- have declared the church itself to have no authority to do such a thing. Pope John Paul II put it in writing in the document Ordinatio Sacerdotalis, issued May 22, 1994: "The Church has no authority whatsoever to confer priestly Ordination on women".
Was Pope John Paul II wrong then, or are these German priests wrong now?
I think, with due respect to the late Pope, that he was wrong then, and potentially being highly influenced by Cardinal Ratzinger (Who later became Pope Benedict) in his thinking. Moreso than who the Pope may or may not have been listening to, and who may or may not have been writing the rough drafts of his documents in the last 10 years or so of his pontificate, though, I think is the general context of what was happening in the Church in that era, which tells us why these documents were being written the way they were, because I don't really doubt that JP2 did believe what was on the page, but I do believe that he was a product, in part, of his time, and that the words appeared in that time and place for reasons beyond just teaching the faith.
Vatican II was largely a struggle between progressive and traditionalist bishops. The progressives won (As my earlier quote from the council is one indication of), but they weren't able to write the documents they really wanted to write, because the council was by its nature collaborative and significant concessions had to be made on wording to get traditionalists to sign on to what was really a theologically groundbreaking council.
Coming out of the council, both of these factions continued to exist, with progressives hoping to continue to progress and get to where they originally wanted the documents to be and to where continued theological discussions and pastoral experiences were leading them (Sort of a Vatican II Plus- Often spoken of as "The Spirit of Vatican II"), and traditionalists hoped to turn back the clock and find the most traditional possible framework to interpret Vatican II through the lens of (Sort of the "Vatican II counts, but it was really just an unfortunate rephrasing of the Council of Trent" school of thought.
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Pope Paul VI is actually one of the few Popes before and after him who has not at this point been named a Saint, and that is in part because there were two factions in the Church hiearchy at that time and neither really ever fully embraced him. Pope Saint John XXIII was the person who actually announced that there would be a council, announcing that it was time for the Church to figuratively open its windows and doors and let some fresh air in, and he is the one who gaveled it to order. However, he died relatively early on, and so it fell to Pope Paul VI to hold additional sessions, gavel the council to a close, and then to implement the council's decisions (Remember, this council took place over the course of years, and of course, bishops had to go back to their dioceses and do the normal work of being bishops for extended stretches, so it was really a series of periodic meetings rather than being a situation where bishops all showed up for a few months or somethibg and just stayed until it was over). Actually, I think one of Vatican II's first acts was officially gaveling Vatican I to a close, and Vatican I took place in 1870- it just had never been officially concluded, but rather suspended indefinitely (If Vatican II did not actually declare Vatican I closed, just by opening it, it may have ended the prior council in a defacto sense).
So, Paul VI was the one who approved the 1970 missal, which was the first missal in the venacular (language of the people- i.e. English), and ended use of the prior 1962 missal, which was what we today might refer to as the last missal for the Tridentine Latin Mass (Some say he never ordered that, but let's just say that everyone in normal parishes stopped using the 62 missal and priests who didn't did not stick around long, SSPXer excepted, and they were small in number and arguably not in full communion with Rome).
Pope Paul also famously proceeded in one day to say a mass with his Papal tiara (a bejeweled crown of sorts worth a small fortune) atop his head, put it on the altar during the mass (As bishops do with miters), and then intentionally proceeded out without it, ordered that its proceeds be sold to the poor, and never wore it again. All Popes since that time have worn simple bishop's miters, though you will occasionally see a picture of a Papal tiara on Vatican stationary or the like.
As one might imagine, these things endeared him to progressives somewhat and infuriated traditionalists. Good Pope John was more of a progressove hero, but Pope Paul did some things that progressives liked (Basically the two things I just mentioned).
However, some progressives at the time perceived Pope Paul as failing to move fast enough or move at all in some cases to implement the full spirit of the council. He stuck with a celibate male priesthood and various other things.
However, the real "kicker" for progressives was when he propogated an encyclical affirming a ban in "artificial" birth control. The birth control pill was relatively new in the scheme of history, and almost everyone assumed that its use was going to be formally allowed, that it was only a matter of time. Many priests are said to have told women who confessed to using birth control in the confessionals that it wasn't really a sin and that the Vatican would be making that official any day now. When the Pope published the encyclical banned artificial birth control, it felt like a punch in the gut for progressives, not only because they thought its use should be allowed, at least under select circumstances (Like if a couple has 10 children and can't afford to feed more, and the doctor is telling the wife conceiving another child woild put her health at risk- potentially leaving 11 children under the care of a single grieving father), but also because they did not see the ban coming.
The Council of Canadian bishops wrote a joint pastoral letter to their flocks basically saying that the encyclical was wrong in less direct language. At least 50 prominent theologians directedly said the encyclical was wrong and signed their own joint letter that they purchased full page ads in major newspapers to publish.
So, both sides had things they didn't like about Pope Paul, although his image has slowly been rehabilitated in subsequent years. He was under a lot of pressure to keep two disparate factions together.
After a very brief pontificate of John-Paul I, who got very sick and died shortly after becoming Pope, the Cardinals with their two factions went back into a conclave to choose a new Pope. You still had traditionalists who wanted a Pope who would roll back the council and its reforms almost completely, and progressives who wanted to move it forward and implement it in a more progressive way. Neither group could get the required 2/3 majority for their candidate, and so eventually they agreed to appoint a relatively unknown moderate from Poland who got along with everyone and was thought to be a guy who would have a relatively uneventful Papacy, not rock the boat, and let the two factions meet again and pick another Pope when he was done, perhaps with one faction gaining a clearer majority in the interim.
The man selected became Pope John-Paul 2, reigned 26 years, and by the time he died had reshaped the Church to the point where only 2 or 3 of the 150 or so Cardinal electors in the conclave that selected his replacement had been in the conclave that selected him. Both factions that had fought with each other during and after the council were essentially gone. It isn't clear who won. Something else was in their place.
Some figures in high places who lived that era say that JP2 basically appointed bishops and Cardinals who agreed with him and would be yes men. What JP2 wound up being is a guy who took a hard line in favor of the new mass and ecumenism, but then was conservative in terms of internal church governance and morality. He and Cardinal Ratzinger thought the Church was spiraling out of control and brought the hammer down. Bishops weren't appointed who didn't toe his line, others who were already there were sometime sidelined. Ratzinger officially censored and silenced an almost unprecedentedly number of theologians during his time as Head of the Congregation for the Doctrine of the Faith (Formally the Holy Office of the Inquisition).
One of the big things progressives thought coming out of Vatican II was that they'd get married priests and women priests in due time. The sort of joke that made the rounds back in the day was that at Vatican III, the bishops would bring their wives, and that at Vatican IV, they would bring their husbands.
JP2 and Ratzinger thought they had to squash that faction to preserve the Church and a lot of their writing should be viewed in that context. JP2 in his early years also tried to squash the traditionalist faction that would not accept the council, held a very prominent ecumenical gathering at Assisi with non-Christian faiths in 1986, and in 1988 essentially excommunicated all 5 SSPX bishops. Toward the end, he started to soften towards the remnants of the traditionalists, something Ratzinger pushed more when he became Pope and lifted the excommunications.
I guess what I am trying to say is that this (the ordination of women) was a very active issue post-Vatican II and I think JP2 and Ratzinger made a strategic decision to try to wipe it out by trying to state it definitively in a way that would cause progressives to lose hope and give up, making it so that it could not be reversed.
But some progressives have read 1Cor13 and still have hope.
I do not know if you or I will live to see Canaan, but I have faith that the People of God will get there, and that there will be milk, honey, and women priests after all these years in the desert.
Don't forget, many people cited past church encyclicals against religious pluralism and said that it was doctrinally impossible for the Church to almost do a complete 180 and embrace religious liberty, that God would not let it happen. But Vatican II basically did it, and subsequent Popes have all affirmed it and expanded it. Some things that seem carved in stone turn out not to be. Jesus came as quite the surprise to many of the religious authorities of his day when he challenged them, but now his followers are the largest religion in the world.