Why do these Catholics recognize the formal heretic Bergoglio as “pope”?
Bergoglio has been excommunicated since he endorsed and published Amoris Laetitia .
The Council of Trent is quite explicit about excommunicating priests like Bergoglio who promote sacrilegious Holy Communion.

The scale at his doctor's office certainly thinks he's worse. Those poor springs cry out in agony at every check-up.

His talk at the press conference in Munich is here:
English translation written: You, Eminence Marx, Have Blood On Your Hands
German original:
Written: Sie haben Blut an den Händen
VIDEO: Chef von LifeSiteNews an Kardinal Marx: "Das Feuer der Hölle erwartet sie"