When all this comes to pass, it would be moot to remain anything but Catholic.
What if you can't believe in evolution? Do you get torched? I mean, I thought G-d raised up the Fundamentalist churches to handle the people who didn't have the gigantic brains to be Catholics. What happens to those people if those churches cease to exist and they refuse to believe that the first eleven chapters of Genesis are a big old fairy tale (adapted from Babylonian and Canaanite paganism)? Obviously the Catholic Church doesn't want people like that. So what's going to happen to them?
It will be obvious to all that God has acted in a way unknown in history
He did that at Sinai, but that didn't stop a zillion people from starting a zillion different religions that claimed to "fulfill" it.
and that there is only One True Church.
Coptic? Syrian? Ethiopian? Armenian? Chaldaean Syrian? Malankara? Assyrian?
Old Calendar Assyrian or New Calendar Assyrian???
I don't believe in atheistic evolution, yet I am an un-excommunicated daily communicant.
I think your evolution bogey man is full of hot air.
Old Calendar Assyrian or New Calendar Assyrian???
Yep, all of the above. All of the Apostolic Churches will be one, "One flock, and one shepherd to guide them." And all the heresies since 1517 will cease. Coming soon.