If the old emacs approach is so much better, why is emacs switching to using LSP?

As someone that got introduced to it in 1996, and was a fan of XEmacs variant, still remembers enough keybindings and Elisp, supported beyond plain syntax highlighting was very much hit and miss, even nowadays.

I have been an emacs user for over a decade now, and if you think that language “support” was as good before LSP, I have a bridge to sell you.