You have to draw the line some where. I didn't see you complaining in Morrowind that throwing weapons was the same skill as using a bow and arrow which obviously requires different techniques. Or for that matter fighting with a two handed claymore is not the same as fighting with a one handed long blade. Or what about when Morrowind tells you that fighting with a short sword is the same as fighting with a dagger?
Short sword and daggers are both primarily thrusting weapons, so that makes sense.
Throwind weapons and bows, good point.
Longsword and claymore, good point.
Either way, in my eyes, the solution isn't less skills, its more. At least some that make more sense.
I like the idea of a skill with sub skills, blade would have sub schools of, short blade, long blade, [insert claymore skill here]
And each of these sub skills would raise the skill of blade, and the overall level of blade affects the other sub skills inherited level
So if my short sword level were 100 and my long sword skill was 5 from not using it, in combat my long sword skill would be inherited as 30-40. It was raised slightly because of my expertise with a bladed weapon, but not as effective because of the different techniques involved.