A great many Protestant churches in Germany certainly weren't.
Rome had made her position on the Nazis utterly clear by 1937.
So, of course, nothing more had to be said. I think England and the US had made their statements, too, but guess what, we still sent people to kill Hitler and his minions.
Fortunately, the Pope didn't have to say much to show the world how serious Rome thought the matter was. Apparently, the Pope didn't even have to excommunicate Hitler, so as to further ensure Hitler didn't have animus against the Catholic church