You don't think that millions of people use vim and emacs? Out of 30-60 million software people?
I've been working for 20 years and I've met exactly 1 person daily driving Emacs (at least for a while), probably 10 people daily driving Vim and maybe low hundreds side arming Vim (maybe 5 for Emacs). And I've met or worked with low thousands of people at this point.
If I had to guess, probably 100 000 Vim daily drivers and maybe 20 000 Emacs daily drivers, both for extended periods of time. Dabblers probably 2-3x that at any time.
You'd see a lot more Emacs users (comparatively) in academic jobs than, let's say, web development.
As an anecdote, I worked for a network monitoring company, 90%+ of the devs were on vim. Later, I worked in a run-of-the-mill SaaS, 90%+ of the devs were on VSCode.
I'd think that (neo)vim is quite popular. Emacs, less so, that's true.
But according to the Lindy's effect, I wouldn't be surprised if VSCode disappears before Emacs and Vim. Especially as heavy LLM users are opening their text editor less and less.