I never understood what's the point of Emacs keys without elisp and Emacs plugins. Emulating only the editor part of Emacs without the rest of what makes Emacs great is not something I would spend time on.
Muscle memory. I gave up on Emacs as an editor almost 15 years ago but having spent the prior 15 using it for coding I still set most of my cli editing to use emacs key-bindings and use it in my IDEs.
