I would listen to Fr. Matt on this one and not spend your time judging.
In the past though, I've found the "three secrets" of Sister Lucia aspect of Fatima, and Sister Lucia herself, to be suspect. I say nothing about the 1917 apparition itself nor of the other children.
About 30 years after the Fatima apparitions (the miracles happened in 1917, the secrets were published in 1943), Sister Lucia published these secrets.
"The Third Secret" which so many Trad Cats have huddled around about and have speculated countless theories on has been explained inconsistently by Sister Lucia; if you listen to her own words around the time of publication, and those who have claimed to hear it from her / those who have read the secret, it's very clear that the Third Secret was Apocalyptic in nature that spoke about incoming disasters at either a spiritual / church level or physical chastisement from God for the godlessness of the 20th century. Sister Lucia said herself that the Third Secret was contained in Revelation 12.
However, in the 90s / 2000s before she died, she gives a diametrically opposed interpretation that simply predicted Pope John Paul II's assassination attempt and the Soviet persecution of Catholics. It's inconsistent such that there are websites and sources that argue the Vatican killed her and replaced her with a double.
Two Sister Lucys of Fatima? Sister Lucia of Fatima
It should be said that she was very old at that point and might have been simply mentally encumbered.
Sister Lucia also said in her own memoirs that during the Canonical Inquiry, she felt the Holy Spirit compelled her to remain silent in regards to the Secrets, because, and I quote, she "obeys the aspirations of the Holy Spirit first before the aspirations of the Holy Spirit's representatives."
Despite these inconsistencies, I want to make it clear that I'm not saying anything about Sister Lucia herself, her spiritual life, or even the validity of Fatima, and especially, especially towards Catholics who have great devotion to the Theotokos through Fatima.
In fact, it might very well be legitimate and open to some kind of Orthodox interpretation, but these are inconsistencies I've pointed out in the past that can't help me but raise an eyebrow.
I do think there is something kind of mystical with Fatima that suggests some of it may be legitimate, even within Sister Lucia's own "Three Secrets" thing. Some of the imagery of the Vatican's own published Third Secret does parallel some of the imagery in Saint John of Kronstadt's own apocalyptic vision, assuming that either is legitimate.
That's not to mention the uncanny fact that Revelation 12's "swiping of the stars," typologically, may very well be referring to a mass apostasy of Bishops, as you often find in Patristic writings the Bishropic associated with "guiding lights;" Saint Gregory the Dialogist himself calls Bishops stars of the sky which guide those at sea, and Saint John Chrysostom is alleged to have said that the road to hell is paved with the skulls of priests, and the lamposts of that road are the skulls of Bishops.
So in the end, I don't know. But I highly recommend to you, OP, that you obey Christ's own words. Matthew 6:25-34