Emacs, how it all started (for me)

It was always like that before about 10 years ago. You're getting your feet wet in programming, learning about free alternatives, and you learn that all the world's legendary hackers become proficient in one of either vi (vim) or Emacs. So you dig in and you find that, as your awareness of programming languages grows, Emacs is a "good-enough" solution for working in nearly all of them. (Vim is too, but maybe a bit less so in 1995 when I was starting out.) And if you want to program effectively cross-language, there's nothing you can do but lock the fuck in and learn your editor's idiosyncrasies, shortcuts, and programming/customization features.

These days we're all spoiled by Visual Studio Code, Zed, even things like Geany and Notepad++. So it makes less sense for neophytes to start with something as ancient and idiosyncratic as Emacs, and Emacs does not enjoy nearly the prominence or mindshare it had decades ago. (Though I understand its absolute user base has grown.)