> By this logic a person who were comfortable with mouse should never grow to like VIM.

Quite the opposite, my argument is that habits are changeable.

> Fundamentally a computer is something that execute instructions. It is pretty poor interface to pick instructions from 100 options using a mouse as opposed to type it using a keyboard. A mouse hides the power of the computer behind a set of fixed clickable options. That is a pretty poor interface.

You continue to argue for my point. OP was claiming that measured efficiency does not matter because it's about "flow". I argue that one can teach oneself to flow differently, the commands can be learned.