Would you say the same about neo-nazis? Let’s a KKK instance on join-lemmy? You think that’s fine?

Three or four years ago wolfballs was a neo-nazi instance that was immediately delisted. But more to the point, if the developers were nazis then yes, I would think it's silly to continue to participate in the community while complaining about it and cursing their names rather than not using it. Even on a federated network, if it's developed by open nazis I would not have an expectation that we'll get rid of the nazi problem and I should keep contributing. Incidentally that's actually why I started ditching the corporate social networks I was on fifteen years ago in the first place.

Don’t play dumb. I’ve been on Lemmy long enough to know their position.

I had never even heard the term "tankie" before joining. The developers posted a lot in the community before it got overwhelmed by redditors a couple years ago. Somehow I missed all of their advocacy for genocide.