You can self-host Matrix without federating, but it’s the best part about it. There is still work to be done about video calls, screen sharing and such in different Matrix clients but it is being work on. Try for example CommetChat as it’s the closest to Discord.
chicocheco
joined 2 years ago
And why not to give Matrix a chance? Stoat (named Revolt before), Fluxer or anything else that is centralised is going to end up doing the same.
I wiped all messages too, because it feels good, but in reality I think you actually don't need to bother as they have already scraped everything and all it does is that other users won't see them.