I would suggest you are confusing official recorded history with a nations need for cultural assimilation of significant and traumatic events such as WW 2.
The Nazi stuff is disturbing especially in the now. So far though I have yet to come across anyone in person who displayed it with intent rather than ignorance or macho posturing, which ring different alarm bells. I’m not talking about the re-enactment crowds though I have never been so don’t know what there motivations are. But in a re-enactment environment I would lean towards suspicion of their motives.