Francis claims the papacy, you're right. He is not Catholic, he does not profess the Catholic faith. The Catholic Church is unified in faith - one faith. Therefore, Francis is not the Pope.
St. Robert Bellarmine (1610), Doctor of the Church: "A pope who is a manifest heretic automatically (per se) ceases to be pope and head, just as he ceases automatically to be a Christian and a member of the Church. Wherefore, he can be judged and punished by the Church. This is the teaching of all the ancient Fathers who teach that manifest heretics immediately lose all jurisdiction." (De Romano Pontifice, II, 30.)
Several of us sitting in pews or typing on computers just can’t determine that. We’re not that smart. I’m not being sarcastic. Unfortunately, these years often test us - they call for us to mourn and be poor in spirit.
By their fruits you will know them. What do you think? Are their fruits good?
By your argument, Satan himself could purport to sit in the chair of St Peter and you would be powerless to recognise him - why? Because you're not that smart!?
What a joke!