Some time in the 80s (or maybe even 90s?) Bill Joy said he just uses ed, even though he's the original author of vi. That worked for him. I believe Linus still uses that 1980s Emacs-y clone that he kind of maintains for himself. jwz uses some flavour of Lucid Emacs/XEmacs from who-knows-when instead of "standard" GNU Emacs.
In the end, it doesn't really matter what other people are using. If Vim (or Emacs) works for you, then you can basically keep using it until the end of time since code are just text files, and these things don't really change all that much (outside of encodings, which is the biggest problem with older editors – but I don't see UTF-8 replaced any time soon, if ever).
I don't really know what the kids these days are up to, but I don't think it really matters. I guess there's still few Bill Joys around using ed, but the existence of vi, Vim, VSCode, or anything else doesn't really take away anything for them.
In the end, it doesn't really matter what other people are using. If Vim (or Emacs) works for you, then you can basically keep using it until the end of time since code are just text files, and these things don't really change all that much (outside of encodings, which is the biggest problem with older editors – but I don't see UTF-8 replaced any time soon, if ever).
I don't really know what the kids these days are up to, but I don't think it really matters. I guess there's still few Bill Joys around using ed, but the existence of vi, Vim, VSCode, or anything else doesn't really take away anything for them.