Do you mean the stoned ape theory? Never have seen it interpreted in that way, but it’s weirdly comforting and I kinda want to believe it now. Makes humanity feel less lost when there could be some fungi buddies looking after us, secretly manipulating us into becoming better beings.

Almost correct, but artistic depictions of Nazi iconography actually are exempt from the ban (falling under “Kunstfreiheit” - artistic freedom).

The reason why Wolfenstein still had to be censored was because video games were not really seen as a form of art for quite a long time. But AFAIK that has fortunately changed in the last years and you can now legally obtain uncensored Wolfenstein versions in Germany.