He's definitely got a point. I had some memory problem with a business calculation I was running, I needed all the memory I could get.

So I looked at the various memory hogs on the linux installation and could see that every Vim invocation had a node process hanging off of it as a child, that's the Coc code completion/language server client running. (Action => only trigger coc for certain filetypes)

And I had vscodium running too, and it had its own long lived subprocesses hanging off of it, for language support, etc.

A lot of apps are like this - humongous clusters of processes (firefox, teams, vscode, and also Vim with the right plugins...)