I stand corrected. Is your experience based on nvim v0.5?
At this point, I think it's probably better to see Neovim as its own editor rather than "an improved Vim". Obviously based on Vim and still with close ties (many Vim patches are still backported), but the "it's just like Vim but with async + true colours"-days are long gone, and the differences will only increase in the future.
Personally, I even stopped making my plugins compatible with Neovim. For example methods ('foo bar'->split(' ')) aren't supported, but were added to Vim close to two years ago (Aug 2019). It's not that the Neovim people are against it: just no one bothered to port it as they prefer to work on the Lua stuff. I find it very convenient so I use it, and Neovim users... well... Sorry :-(
As an inveterate vim user, I jumped to neovim in hopes of a leaner, meaner and faster editor with an easier configuration process ( i don't like vimscript as compared to emacs lisp). After 5 years, neovim has hit a lot of milestones and I see it going places, yet the only thing that still attracts me to it is the energy and enthusiasm of the community.
I still don't fancy learning an entirely new language to configure my editor, but that's the fun part! ymmv I guess.