In the case of Bergoglio he has even said at least on one occasion that he could care less whether what he said was heretical or not.
Right, but Bergoglio is the least of my worries. Paul VI is the big concern, since he's the one that brought us Vatican II and the New Mass.
Even with Bergoglio, the remarks could be viewed as flippant and irreverent, and if pressed by the Church on a matter, it's hard to say if he would recant.