The only things we are required to believe about Purgatory are what Trent says. Trent is very clear that we can not know the nature of Purgatory, and it exhorts priests not to make it into something it isn’t. . Your simplistic thinking on Purgatory is what caused wackos like Luther to be successful. Church officials were scamming the poor by scaring them with wacky notions of Purgatory. Purgatory is a very speculative subject. We know very little about it. I myself prefer the Patristic and Eastern(Catholic) writing on Purgatory to the Medieval notion.
This post of yours is Novus Ordo thinking. There is nothing speculative about it, purgatory is, as St. Thomas says, just like hell, except it's fires are temporary, not eternal. I mean, fire is fire. The Novus Ordo try to play it off as "we really don't know", but fire is fire, it is only some "wacky notion" to non-Catholics.
Here is Trent's Catechism on the subject. Note that it's teaching is founded on Scripture and Apostolic Tradition, not the modernist opinions of some 'recent' heretical theologians:
What We Do Pray For....We also beg of God that we be not cut off by a sudden death; that we provoke not His anger against us; that we
be not condemned to suffer the punishments reserved for the wicked; that we be not sentenced to endure the fire
of purgatory, from which we piously and devoutly implore that others may be liberated.
Different Abodes Called HellThese abodes are not all of the same nature, for among them is that most loathsome and dark prison in which
the souls of the damned are tormented with the unclean spirits in eternal and inextinguishable fire. This place is
called gehenna, the bottomless pit, and is hell strictly so-called.
Among them is also the fire of purgatory, in which the souls of just men are cleansed by a temporary
punishment, in order to be admitted into their eternal country, into which nothing defiled entereth. The truth of
this doctrine, founded, as holy Councils declare,' on Scripture, and confirmed by Apostolic tradition, demands
exposition from the pastor, all the more diligent and frequent, because we live in times when men endure not
sound doctrine....