Think of when you used a retina display for a while and then looked at a non-retina one: "ew, why is this disgusting now?" I think that's what he's trying to

Think of when you used a retina display for a while and then looked at a non-retina one: "ew, why is this disgusting now?" I think that's what he's trying to say: not that our vision physically improved, but that we started to notice the roughness of lower-res displays. Imagine a future where all displays are "Retina" at 1-inch distance; you'll be annoyed that when looking at a lower-res display it won't show someone's nose hair.