Why would he be so religious?

He worked NOT for the NAZI science division, NOT in the NAZI military division, he worked in the Propaganda division under Joseph Goebbels.

https://en.wikipedia.org/wiki/Wernher_von_Braun

Klaus Barbie was so good the OSS broke him out of a French prison and helped him escape to South America where they immediately put him to work on things like Operation Mongoose (by then they were CIA)

This is one of the weirdest things the conspiracy world has to offer.