Something that seems to permeate keyboard vs mouse debates is an unsaid assumption that some kind of robotic consistency/purity is the goal.

I don't buy that at all when a human being is involved. There are tons of actions I know perfectly well how to achieve with either the keyboard or the mouse, and which of those I unconsciously choose at a given instant varies based on what else I'm thinking about, precisely how I'm physically positioned, and just how I'm feeling. There no problem with that.