I don’t know if anyone can speak for the whole community. Personally, I use vim for a similar reason that I use Postgres. It’s open source and well-tested. The rough edges are extremely well known, and relatively polished or padded.

And, if a feature is desirable enough, I know it’ll end up as a vim feature sooner or later. Like JSONB, timescaledb, etc. for PG.

Kakoune looks like it has some cool features! They’ll probably end up in Vim (or nvim) eventually.