I really do not understand this logic. In a RPG like TES, a game where the main draw is the ability to do whatever you want, words like "pointless" and "redundant" should not exist. A player should have the ability to freely customize his character with minimal restrictions. Sure, I guess you can write off merged armor slots as not that big of a deal, but didn't we deal with the same thing in Oblivion? What happens in TESIV, when Bethesda decides to make things even easier by giving us one piece armor sets? Will it still not matter?
According to this logic, almost every feature in a TES game is redundant. Axes and Blunt weapons are redundant, they're just retextured swords. Daggers, short blades, and claymores are redundant. Daggers and short blades are just weaker long swords, and claymores and just too slow for an adventurer. Destruction magic is redundant, we already have swords and bows, and destruction magic is just too complicated. Restoration magic is pointless, we already have potions. Heavy armor is pointless, it's just too slow for an adventurer. Actually, almost every single equipment type is redundant, the only one that matters is Daedric. Iron and steel weapons are just too weak, the only weapon in the game should be a Daedric long sword...
Yes, that is an exaggeration of the problem, but it has been a common theme in every TES game (barring Daggerfall) to give us less and less features and customization. You can say that less armor slots isn't that big of a deal, but it will eventually reach the point where we will have no customization at all, and TES will become a linear action game, where you won't be able to deviate from the path that Bethesda has set. Bethesda may have some surprises in store for Skyrim. Who knows, I might be completely wrong. But at this point, I can't say that I like the direction that Bethesda is taking the series