This was probably written with only the English-speaking part of Twitter in the writer's field of view. English in Twitter doesn't comprise even a third of all

This was probably written with only the English-speaking part of Twitter in the writer's field of view. English in Twitter doesn't comprise even a third of all tweets ( https://www.vicinitas.io/blog/twitter-social-media-strategy-2018-research-100-million-tweets#language https://www.vicinitas.io/blog/twitter-social-media-strategy-... ); in fact, for pure tweets that aren't RTs nor replies, the above data even shows there are more Japanese tweets than there are in English, albeit by a slim margin. So, I agree it's about the people, but I don't see the people leaving, at least in the languages I use.