I'm not too sure about the "many felt" part, but then again what I'd consider right-wing/nationalist[1] parties are on the rise in Germany (especially the ex-Communist East) and I'm not surprised that people come up with that sort of viewpoint[2] these days.
Antisemitism had been on the rise since the late 1800s and the stories about "Jews secretly controlling X", with X being something that was disliked, were bountiful even before it got instrumentalized by the right wing and nationalistic parties for their political ends. If you have a good look at what happened in Germany in the 30s you'll find that it basically culminated into state-approved looting of any sort of assets that were owned by minorities (including Jews, those were the biggest "minority" but there were several others affected the same way). BTW, I'm putting "minority" into quotation marks here because Jews were pretty much the only ones that were singled out because of their religion, the other ones were mostly ethnic groups.
As "fighting the godless communists", that's a whole load of BS in my book.
First, look at who financed the right wing parties - it was mostly big business and what was left of the defense industry that had been severely curtailed by the Versailles treaty, together with some old money that wanted the monarchy back. The people who financed the parties were essentially opposed to any sort of organised labour, and that included anything from center-left parties that were trying to represent the lower middle class to the communist-leaning and communist parties of the day.
Second, the whole ideological idea about conquering/occupying Eastern Europe had nothing to do with communism at all (neither Poland, Czecoslowakia, Hungary, Austria or anything on the Western side of the USSR was a communist state at that point - in fact they were mostly regular democracies), but all to do with some race theories that essentially labelled the anybody of slavic (ie, eastern european) origin as member of an inferior race that should give way to the "superior Aryan" race[3]. That was the justification for the land grab, not communism. Don't forget that early in the war, they even split Poland in half, one totalitarian dictator making a pact with another one.
The Roman Catholic part is also something that I would disagree with vehemently, from the simple point of view that whoever said this makes it sound like most of Germany is Roman Catholic (which isn't the case, it's about 50/50 Catholic and Protestant). The Catholic church pretty much had one of their darkest political hours by aligning themselves more with the government and its atrocities; you'll find that a lot more Protestant pastors and activist were killed for political reasons (because they dared to speak out) than Catholic ones.
I don't think the whole Soviet Block structure would have come into existence if the war hadn't happened - by essentially splitting Europe into spheres of influence during conferences like the one in Jalta, a lot of the structure that prevailed from the 50s to the late 80s was created as a direct result of the war, and it probably ended up more homogenous that it would have had otherwise. Keep in mind that the USSR was pretty much the only big totalitarian communist country pre-WW2, other countries might have had communist parties as part of their government but at least in the Western Hemisphere there weren't any other totalitarian "communist" states at that point - you had Spain, Italy and a couple of the not-yet-Yugoslavia states that were fascist totalitarian states, but no communist ones - even though the USSR was pouring tons of money into the international communist movement.
[1] Don't really confuse that with the supposed right/left discussion here in the US, I'm using right and left as perceived in Germany.
[2] Which I happen to disagree with fundamentally.
[3] Which I think is still one of the biggest jokes played on them - look up Aryan on Wikipedia to see what I mean.