Isn’t the Pope infallible? So if the evangelical leader finds himself ‘divided’ against the Pope, shouldn’t the evangelical leader admit they’re wrong and repent?

Protestants in general don’t recognize the pope’s authority, so not really. In point of fact, they generally see him as barely-christian at all (and guilty of trying to intrude between god and the people’s salvation.). The whole temple veil being torn open was symbolic of removing the need for clergy at all.

Though, of course, this doesn’t mean that protestant clergy aren’t as likely to assert their moral authority, too, in a supernatural-sized “trust me, bro”