@tomekw I suppose it depends. I switched from neovim to vim 9 and ditched the PHP intelephense LSP because it's a slow and proprietary node js application. Since last year, I have exclusively used universal ctags in vim, and I'm as productive as before. Everything is also much faster without the calls to the LSP. For Go, I use vim-go (if I remember correctly). The plugin communicates with 'go pls' in the background when needed.

So, to answer your question, it's quite useful for me.