In such situations, an alternative version/server might be a solution. For example, a social.vn.wiki could specialize in alternative views on socio-political issues in Vietnamese and be moderated differently. I can imagine new Wikipedia hubs where content changes are monitored by AI to detect manipulation attempts and obviously false content. I also can imagine a new Wikipedia, where the reader can up vote/down vote an article instead of actively change it. For heavy moderated contents, this could be a better alternative to a edit war.
I'm not sure that federations can solve this problem because of their inherent dynamics. But living in a world where the well of knowledge is poisoned can feel quite suffocating. Federation at least allows alternatives to exist.