How do you deal with those keybinds on emacs?
I've no idea, my muscles do it on their own :-). There is some logic to some of the mappings but realistically not to the level of composability vi has.
I think this whole editor efficiency thing is overrated. I learned emacs pretty much by accident, it could've easily been vi. Tbh I think that once you've learned an editor, the only reason you should learn another editor is if the one you're already using is suddenly wiped out of existence, or it doesn't run on the platform you're using, or some similar catastrophe that makes the editor you used unavailable. In my case, if UltraEdit had been available for FreeBSD back when I learned emacs, there's a good chance I would've never learned emacs.
Not that I don't enjoy mock editor wars, those are fun as long as in they're good humour :-D.