Summa Contra Mundum gives us the perfect reply...
when faced with those who jabber on about the Holy Father being such a great man, but “...fill in your gripe here...” I am sure I may have to use this before the end of business today.
”If you think he's great, he was great through and through. If you disagree with his moral teaching, then he wasn't great, but a fool.”
Check out the whole thing.