If the user has a worse experience, that's a lose/lose situation. Of course they should care about things that affect the experience.
> My Apple keyboard lets me use it while it's plugged in, and the world hasn't ended. Why didn't they put the charger on the bottom of the keyboard too?
A cable doesn't impact a keyboard because it's not moving.
> Why don't they make their phones so you can't use them while charging?
The chance of a phone being left plugged in forever is minimal to begin with, and the hassle of not being able to use it while it charges would be much larger.