I think that "Show HN: A text editor that doesn't use AI" could easily be a post here today
And it’s just a copy of notepad from windows xp.
Given it's HN, it'd likely be emacs, vi(m), or something like acme.
Dave Plummer (ex Microsoft) did this on his YouTuve channel recently: https://www.youtube.com/watch?v=bmBd39OwvWg
Would also recommend his back catalogue, if you haven't.