There's a bootstrapping problem to all these decentralized communities though. Because you need to be slightly technically adept to create, run, or even hear about such instances, all these platforms are innundated with psychotic nerds. I like free software, I think Marx was right about most things, but I can't think of a bigger waste of time than hanging out with a bunch of mentally ill furries and groomers.
That's an inaccurate and disgusting characterization of fediverse users. Many of these users are members of the free software community who do not fit your description: