@nixCraft I've been using #vim for 20 years (now using #neovim ). It's still lean and mean when used "vanilla". However, if I enable the autocomplete, autocompile, auto spellcheck, treesitter, folding, etc. then it noticeably takes up CPU as I type. I don't mind paying some CPU for this...
But for eyecandy I really couldn't care less. Loved my keyboard only #fvwm setup. When I switched to #wayland I finally gave up fvwm for #kde . Happily, kde is lean and fast even with eye candy...