Comment by nine_k

Indeed. Completion, yes. Auto-completion, no.

Disclaimer: I do use LSPs extensively, but they do what they are intended to do when I explicitly ask. Offer completions. Format code. Organize imports. All that is available, but only happens when I ask. Same happens where there's no LSP support, and basically the same commands depend on ripgrep, fzf, semantic-grep, external linters and formatters, and plainly compilers.

Me and my tools take turns. It's almost 2025, practically everybody agrees that concurrent mutation of state is a source if trouble.