We do? Not me! Nominal or otherwise he was an abomination! Do not try to associate him with the Catholic faith. Please.
Will you be rebuking the OP for trying to associate him with Protestants then, lol?
Hitler is quite the hot potato, for obvious reasons. Fact is, he was baptized Catholic. Another fact is, he did not by any stretch of the imagination live his life as a Catholic. Yet another is that he was embraced by quite a few Protestants.
Beyond that, blame-storming such as this leads nowhere. As far as actual religious belief, he appears to have leaned upon presumed ancient, Teutonic paganism, mixed in with occultism of far more modern vintage. He hated Christianity, but used Christians to further his ends, to the point of attempting to co-opt the Church for propaganda purposes.
The people of Germany were susceptible to such demagoguery due to their very recent desperation under the Weimar Republic, hyperinflation and destitution were widespread. Hitler promised not just subsistence but a return to former glory. Many fell for it.