Neovim suffers from the Javascript kids mode of development. Constant change, constant churn, the mirage of stability always behind the corner, you always require third-party packages for functionality that should be core, completely erasing the Lindy effect of vim proper.

It’s a bit sad Neovim has stolen the thunder from the original work of Moolenaar & co. My guess is that neovim will splinter itself down the line further again once lua stops being attractive, while vim & Emacs will keep chugging along for another half century.