“You’ll recall that Hitler was Roman Catholic, not Lutheran.”
I’ll take your word for it that Adolph called himself Catholic. Even if true, he obviously had a falling away from the faith.
Just calling yourself something or having a title doesn’t make it authentic. Multitudes of examples - Nancy Pelosi is one.
You don't have to take his word; you can study history.
Hitler was a rationalist and a materialist who surrounded himself with pagans.
His remarks to confidants, as described in the Goebbels Diaries, the memoirs of Albert Speer, and transcripts of Hitler's private conversations recorded by Martin Bormann in Hitler's Table Talk, indicate anti-Christian beliefs. Goebbels wrote in 1939 that Hitler is "deeply religious, but completely anti-Christian", and in 1941 that he "hates Christianity".