While Matrix itself has a few issues (would like to see them operate out of a freer country), something I like about the Matrix approach is that groups are hosted on *preferably neutral infra which, if it moderates, moderates to the law or not much more*, and then, someone in those groups does the actual moderation.
This way, you can decouple the *moderation* from the *infrastructure*, where with the fediverse, these two are tangled together.