So maybe let's discuss specific examples where these laws go overboard, instead of alluding to hypothetical arguments while the concrete symbol under discussion directly supports genocide?

I'm an American and generally free speech / free communications absolutist, but it's weird to be taking issue with this in the existing context of Germany. From my own American perspective, I also consider the zwastika to be in a similar boat as the swastika. The free speech angle merely means that my personal judgement will inform my personal relations, rather than the boot of the state being involved.