Even more turned to atheism.
I wonder if their texts are written in Latin or Austrian.
I don't believe the latter statement. Perhaps you have some believable proof of that. The Germans and Austrians aren't any different than anyone else.
You can't say that "a lot of..." and, in the same sentence, "even more..." That is contradictory.
I found PACKED churches in Austria. In Germany the churches were just like the ones here, full of old women. Hey, that's ME. :o)
However, I didn't LIVE in Germany or Austria. I've only visited there a dozen or more times. Frankfurt is THE port of entry for European travel.
The empty churches are in Scandinavia. We've had a friend over there for almost 40 years...watched her grow up and older over the years. She became a doctor. The empty churches are what she has reported over the decades. She says that it's very sad, being in those beautiful but empty churches. Many of their carvings and paintings (on the walls) are very old...from the Viking days.
She also says that "VIKINGS" is pronounced vEEkings, not the way we pronounce it. VEEKINGS? Tsk! That sounds wimpy!