Or any instance really that does not defederate from those. “For some reason nobody wants to join our Alt-Left Nazi bar over here… - why can’t people be smart enough to not choose the bear?” (/s btw, in case it was not blindingly obvious).

But Ada and https://lemmy.blahaj.zone are hella impressive, and I don’t pretend to understand why the name “blahaj” is turning some people off, but I would think it’s an absolutely perfect opportunity to switch to?

I suppose that still leaves the issue of what to do to replace the wiki - perhaps a locked community with links structured in its sidebar to point to posts?

There are tools that can meet at least some of the needs being asked for, but nothing is perfect.