Some language servers (e.g. PyRight) also regularly consume 2GB RAM for me when using Emacs. Also, for some languages, their IDEs are just way ahead of the competition (e.g. Java). Even for e.g. Rust CLion works really well.
(I probably use Emacs and JetBrains products 50/50. I prefer the keybindings of Doom Emacs, but prefer the JetBrains IDEs for actual development. E.g. refactoring is a lot easier.)
I'd almost forgotten that a lot of the (n)vim language servers require Node.js. The first time I tried CoC it was over an ssh session to a small VPS I had.
I started up Neovim with the new config, and promptly had my ssh session hang. It took me a little bit to figure out that I'd maxed out the 256MB of RAM on my little VPS and hard locked it. Had to get a bigger VPS to actually run my editor.
(I probably use Emacs and JetBrains products 50/50. I prefer the keybindings of Doom Emacs, but prefer the JetBrains IDEs for actual development. E.g. refactoring is a lot easier.)