There was no mention of repentance or profession of faith in a Christ. But as Rome has added to the Gospel, which means it’s a false Gospel, he’s joined the wrong denomination.
I don’t know what’s in his heart (neither do you).
A missing testimony doesn’t mean there isn’t one.
It’s best not to judge the salvation of someone else. But it’s okay to examine ourselves.
I say all that in the context of the individual - not Roman Catholicism - THAT we may judge freely because it is contrary to God’s plan of salvation.