I get it, not everybody has the mindset of living in one tool — I didn't either, before I converted to Emacs, which is a relatively recent development. Maybe 3-4 years, though I did use it ~7 years ago once, and then even further back, probably around 12 or so years ago. I don't quite remember.
But I came back to it, and stayed for good, because Emacs is really an OS with a nice editor. So you can have the same approach of do one thing and do it well, but you have different packages instead of different programs. And they synergize nicely. So it's not only an IDE. Everything I use is purpose-built for that one task, including ledger (accounting), mu4e (mail), lsp (IDE-features), org (agenda, research, documentation) magit (git) etc. None of these things are "plugins". They're programs in their own right, just like ls and mutt, and git themselves.
But I came back to it, and stayed for good, because Emacs is really an OS with a nice editor. So you can have the same approach of do one thing and do it well, but you have different packages instead of different programs. And they synergize nicely. So it's not only an IDE. Everything I use is purpose-built for that one task, including ledger (accounting), mu4e (mail), lsp (IDE-features), org (agenda, research, documentation) magit (git) etc. None of these things are "plugins". They're programs in their own right, just like ls and mutt, and git themselves.