The RCC has always maintained that the Pope is infallible in matters of Church and faith.
Suggest you read A WORLD LIT ONLY BY FIRE - William Manchester - noted historian.
I am a 32nd KCCH, and have NEVER seen or heard anything that would compromize my belief in Jesus as my Lord and Savior.
I've looked at the synopsis of William Manchester's book. Not sure how that relates to this topic.
I never saw or heard anything whilst I was active that I thought compromised my beliefs either.