Agreed. It took me half a day and I came not remotely to the UX and performance of coc.vim. Most incl. the nvim team are not aware that eg. tsserver is the fastest and most responsive code formatter for TS (yes, it goes beyond the LSP spec but that's how it is, also for historical reasons). Prettier does not come close.

Maybe they've never tried or deliberately ignore coc.vim for whatever reason. coc.vim works almost out of the box, has the fastest and most pragmatic maintainer who helps anyone and tsserver makes it as good and as fast as VS Code. Instead of just cloning coc.vim's tsserver implementation—or why do they no contribute to coc.vim??—roll their own inferior solution, years later. It's not that nvim's LSP implementation is at its beginning and we can expect more is coming, no the maintainers just do not know or ignore the status quo. Feels very much like Bram a decade ago.

Maybe it's time that we see a third fork—coc.vim.