If you want to spend your time that way, that's cool with me. I like vim. Such things have their place. Personally, I suspect this doesn't solve any problems I have.
I do concede this doesn’t solve any problems of yours as you don’t value what you do with your keyboard very much.
Efficiency for me is not the same as efficiency for you. Deal with it.
I'll also add that something like vim is specialized and very useful. It is easier to use vim in a mouseless environment, which is sometimes a necessity. I use it fairly well, and it has paid dividends on the time invested. I can appreciate the value of a good tool.
But typing speed is not the same as efficiency because standards are efficient in their own way. I'm sure you'll say "oh, you don't value words and have nothing important to say", but that's a ridiculous argument. It is simply that, in my opinion, this type of thing is not worth the overhead it creates, much like extremely customized vim configs. Time is invested in the pursuit of efficiency, and it is never returned. One day the config ceases to function correctly, or your friend/coworker/family member tries to use the keyboard and can't use it effectively, so it gets disabled.