To learn Vim you have to use it everyday. Question is if most have the opportunity to use it full-time for development from day one. I started with Vim using it just as a todo list manager on a remote server. Wrote here and there some macros to add or mark todos and that was my gateway drug. Used it everyday and at some point it felt more natural than any other editor. So I fully switched.

Besides, I use Neovim for 1-2 years now.