[stewbrew]

I don't know about VSC but most IDEs are rather difficult to extend. VIM makes it quite easy to create a plugin or prototype new ideas. If you don't need clever code completion etc., VIM is still very useful. Other than emacs, VIM also has some guidelines wrt to code organisation (pack, plugin, autoload, ftplugin, syntax etc.) that make things easier. vimscript is a simple language that has its warts but actually is quite useful in the context of this editor. To some extent, you can write (parts of) your plugins also in python, ruby, lua, mzscheme etc.

So, to some extent it's still useful and relevant. VIM also runs on your android phone, VSC, Idea, Eclipse etc. don't.

WRT to learning lisp, I'd recommend racket. It's scheme and unfortunately mzscheme lacks the libraries, e.g., common lisp has. It's very useful nevertheless.