No. The concept was created at that time, drawing inspiration from the statements of a scattering of church leaders in earlier times which dealt with only the sketchiest of ideas about some sort of experience after death that is not heaven or hell.
I know that's how you see it, but that's not the way it is. But that's just Reformationist.
But Purgatory is a completely fleshed out concept that explains what it is, who goes there, what happens to them there, why they go there, how long it lasts, how that suffering may be moderated by the petitions OR indulgences of the faithful in this life, what justifies shortening the experience (the Treasury of Merit which requires its own definition, etc.) and more. It is not "Purgatory" simply to say there is a place in the afterlife where you get purified. That is like saying the meaning of "America" is it's a piece of soil, period.
Well, I posted what Purgatory is, according to the CCC. Regardless of what theologians or would-be theologians have said it is. Regardless of what some people think it is.
In my own case, and those I know, people just hope to get to purgatory, because they know they'll get to heaven. I, and we, don't speculate how many days off we can get by going on a pilgrimage. We do pray for those in Purgatory, as the Bible says we should pray for the dead. Those dead referenced were sinners, and merited hell for their sin. Prayer doesn't help anyone in hell, so these prayers were for those who died in friendship with God, but were not pure, as required to enter heaven.
So you're criticizing what some people believe, which is your right, I suppose, not what the Church actually teaches, or taught. And yeah, I know there were some pretty powerful people in the hierarchy who were telling people that they could get time off in purgatory if they could see fit to give more money.
We see the same thing today, where German bishops are trying to subvert the pure teaching of the Church by speculating and advocating a married priesthood and reception of communion by remarried Catholics who didn't seek annulment. And many other things. We also see talk of schism because of some of these things. But they aren't in the Catechism and aren't Church teaching.