Looks like a federated wiki, which is great. And not a Wikipedia alternative. What makes wikipedia wikipedia is not the tech. Social and knowledge problems can't be solved with tech ;)
As much as Wikipedia has issues, as the ibis announcement states, it also works in many places. And federating it won't help with the issues of bad moderation, quite the contrary. And as much as I like nutomic (thanks for syncthing-android ;) ), I don't hear many good things about the lemmy moderation story. So I have my doubts. Lets hope I am wrong. Plus anyway, federated wikis is a great thing to have, ignoring the whole Wikipedia aspect.