Ridiculous, you say? It happens all around here, all the time. One Catholic saying "once Catholic, always Catholic", and another saying "the Church needs to excommunicate that person behaving badly". And another begging everyone to just "come back home to the Church". All the while, evil just grows and grows.
Hitler was the popular head of the German state, and head of a party whose papers was openly contemptuous of Christianity. The reality is that the most politically active Catholics were in concentration camps, and in seclusion. The Nazis knew how to decapitate opposition. The concodate that was supposed to protect the Church’s social role in society was breaking down. The letter from the Vatican denouncing Nazism had to be smuggled into the country. Ordinary German Catholic either supported the regime or were afraid to oppose it. Hitler had been very successful for four years and had gone to restore Germany’s place in Europe. That was the situation.