Mastodon was no longer mostly French and German, some English, and a smattering of other languages.
It was, as I commented the first time, Turning Japanese. And is now a Plurality.
It's interesting not only being a minority /language/ as a principally English speaker, but a minority /alphabet/, on an online system. And it's an interesting problem to have.
There are also several larger populations out there, not yet connected.