Flat earth also started out as satire.

It's innocent fun until it isn't anymore.

I'm unsure about how I'd personally act on this? Donald really was a joke (until he wasn't). Flat earth "conspiracy" was funny (until people took it seriously). Nazis, ...?! Kinda not funny? Maybe if it's just "shit nazis say" type stuff? Admittedly I've not looked at the community in question yet, not in the mood for it. So my input is just based on vibes. I originally just wanted to add the flat earth part.