Let me take a wild stab at this. Perhaps because christian apologists would rather fight on comfortable ground, by talking about Hitler's personal life, the arcanum of canon law and feeble-minded, short-lived naturalistic sects, than face up to why Hitler and the Nazi propaganda machine made successful religeously-couched appeals to the German people to win support for the final solution. Germany, by census, was overwhelmingly, and intensely christian before the war and after the war, so it's a pretty reasonable guess that they weren't Odin worshipping Fitche-ian public nudists, immune the the outpouring of religious defamation of jews during the war.
I dunno, there's some anecdotal evidence which I am too manifestly lazy to dig up completely.
And you've been irascible enough recently in this thread--and I'm procrastinating on something else too--that I feel like taking my own turn at being a smart-ass.
James Herriot wrote in his autobiographical novel All Creatures Great and Small (or one of its sequels) of a prank pulled by another British Veterinarian involving a German Naturist magazine with 'full frontal nudity on its cover'. He points out that "even in these enlightened times it would raise a few eyebrows, but in 1930's Yorkshire it was positively cataclysmic." (paraphrase mine).
So we do have anecdotal evidence of German nudists in the pre-war period.
As far as Odin worshippers, my knowledge of Germanic / Scandahoovian mythology is somewhat lacking. But I have read that at Hindenburg's State Funeral, as part of a public pronouncement, Hitler said (to the coffin, or the corpse, or whatever): "And now, enter thou upon Valhalla."
No, for once I don't have the ISBN number, but it might have been in the Time-Life series on World War II.
Cheers!