The pope speaks ex cathedra much more than you would like to admit. He speaks "from the chair" whenever he acts as teacher for all Christians. R&R commonly conflates ex cathedra with "solemn definition". I know we could go in circles over this point ad nauseum - so I am happy to let it go at - agree to disagree.
Do you think Francis is Catholic?
No need to go in circles if we simply adhere to the infallible definition V1 gave us, i.e. the pope is in fallible when he defines a doctrine ex cathedra. They prefaced that by saying he is not infallible when he makes known new doctrines. New doctrines = heresies. V1 never said popes would not be able to make known new doctrines.
I do not think the pope is Catholic, I think he is an anti-Catholic heretic. And I profess that (to paraphrase St. Thomas More)....I remain the pope's good subject, but God's first.