this is not Catholic teaching and no Catholic believes such absurdity. this is simply what Protestants have been told about Catholicism, but it's not the truth.
the pope (a real pope, not a false pope) is only divinely guided and infallible when speaking ex cathedra. in these situations, the Holy Spirit is there to protect the Catholic Church against any possible heresy being taught ex cathedra.
“this is not Catholic teaching and no Catholic believes such absurdity”
Please. I wasn’t led down the garden path just because I was raised a protestant. Although I agree with you about the absurdity of it, my father-in-law had been a Catholic all his life and was very devout. He was educated by the Jesuits in the 20’s and 30’s. That is what he believed. My mother-in-law, also a devout Catholic but more practical, disagreed with him and it almost caused them to cancel their wedding back in the 50’s. It was a story they loved telling their kids.