That is worth noting, but of course looking at the proximate cause can only tell us so much. It's true that Catholics took a (IMO minor) part in the German reaction, but the underlying cause of that was the popular disillusionmnent with American-Marxist mimicry and policy, and the cause of that was the United States' leftist meddling in World War 1 and the armistice that followed.

As far as revolutions in Catholic countries, the Catholics should have more violently put down all threats to politico-religious authority. For that they can be blamed. Even so, it was a sin of omission, and there's little they could have done after the Reformation. The plague of chaos had already begun to spread.

That's my narrative, anyway. I'm not trying very hard to make it accurate, and so I don't trust in it much. I only started thinking about politics like three months ago.