I don't understand how you could assert that. My understanding is that Popes have no history of dogma failures.
That’s your problem. You don’t understand how there can be good popes and bad popes.
I think you have no idea of the difference between dogma and dog food.
>>>My understanding is that Popes have no history of dogma failures.
Correct. Therefore if he is teaching error or heresy, that signifies he is not Catholic, ergo not the pope.
N.B. Pope Pius XII, died 1958, was the last real deal.
I know this character is way over the top so it is much more “in your face”, but the others since 1958 have been a problem as well.