That statement did not open a door to such tangents. The point is that when an item lacks a modifier describing the material, but other items of the same type can come with such modifiers, then one is led to believe that the item without those modifiers is made up of something other than what those modifiers indicate. That in and of itself is a problem.
The problem is further demonstrated by the fact that we know that normal weapons are made from steel. If a weapon has no modifier, then it is made out of steel. We know this is a fact because of the crafting system. However, weapons which are crafted using steel are not given the steel modifier, and there are steel weapons that have different stats.