I really don’t like the disdain you’re showing here. My relationship with my Savior does not suffer because my church does not doctrinally agree wholly with Catholicism.
I don’t know why you’d be surprised. He’s decided to dedicate himself to the Catholic religion. I imagine that would be a hard decision to live with if you didn’t buy into to all the talking points 100%.
My wife’s extended family includes people who are Catholic, but they don’t go about telling those in the family who are not that their Protestant denominations of choice have no justification for doctrinal disagreements.