Being one of the oldest GNU projects it's impressive how quickly Emacs is developing and not only that, the pace is accelerating! LSP and tree-sitter support are now built-in to Emacs and integrating them took less than a year to do.

Eli Zaretskii and Lars Ingebrigtsen are doing amazing work as maintainers.

I'm a diehard vimmer using Emacs (Evil-mode), and I can say the same thing. I'm very impressed with the changes in Neovim over the past few years.