that glasses analogy is BS. You use eyeglasses an inch or so from your eyes and any small scratches will be out of focus and invisible. And that's the ONLY place you use your glasses. And you don't touch your glasses to use them. Your phone, however, is used in all different locations, and you do touch the screen to use it. Small scratches on glasses are insignificant, small scratches on a beautiful piece of electronics with a super-high res screen are not insignificant. So it's comparing rotten apples to fresh oranges. It sounds clever, though, if you don't give it any thought.
id hate scratches on my glasses as well....its an all around sickness with me.