Where did you read that?
You’re welcome.
I stumbled upon it myself not so long ago so I don’t have any clue about how it all fits together. But on first sight it looks like a bunch of stuff is already in fedi we just don’t know about it and assume Lemmy/kbim/mastodon is all there is.
I think hubziller offers federated wikis.
Edit: added missing word.
❤️