It's a self-fulfilling prophecy, another issue I have with this is that people are essentially handing symbols over on a silver plate to bad people without a fight.
I don't think that the Swastika for example is inherently offensive, it's still used in the East as a religious symbol.
It's offensive when people use it in an offensive way.
And it's normally VERY obvious when someone is using it in an offensive way.
Sometimes it really feels like people go out of their way to intentionally do this too, like I've had people from NA unironically try and lecture me ( a Swede ) about how offensive and racist Mjölnir ( Thor's Hammer ) and Runes are because there were some Nazi's who used them too.
I've never in my life had anyone in Sweden or Denmark where I've spent a lot of time too ever looked at it that way or given me shit for being into that part of our history.
It's always people on the outside who come in and try to turn it into an issue.
Even then I really don't believe that most people outside of Scandinavia look at it that way either I think it's something people who spend a bit too much time online do because they always want to have an issue to talk about.
If there is none then you create it yourself.
If anything I think that instead of enabling it and basically telling people that yes if you see a Z now then that's how you should think, people should push back against it and point out how nonsensical it is.