I've tried it. It's useless. It changes a handful of trivial keystrokes and nothing else.

It's like bolting pedals on the sides of a huge car and saying "Look -- it's a bicycle now!"

CUA compliance needs a total rewrite of the UI and the manuals and the tutorial.

Fortunately, much of it has been done, but it's still incomplete and it's hard for non-Emacs-users to get working.

But it's here:

https://ergoemacs.github.io/