You've confused a difference between some parts not being directly applicable to fighting skill, versus nothing being applicable to fighting skill.This is the part that I don't understand. If someone is not interested in fighting skill, why does he want to learn MA for?
Again, I can only speak for myself. If someone has no interest in fighting, I have no interest to teach him.
But beyond that issue, why must someone want to develop fighting skill to enjoy skill development, flexibility, fitness, etc? All those things can be had in MA, whether anyone is actually improving their fighting skill or not. And folks do lots of other things for those reasons - why not MA?