Re: "...their head stuck in their slab..."
"On the other hand, there are those rude self-absorbed morons I see everywhere reading books."
Twenty or more years ago, I almost never saw somebody walking down the street reading a paperback, running into lightposts, telephone poles, letter boxes, other pedestrians, stepping into traffic without looking, and otherwise attempting to hurt themselves (or worse). These days, not a day goes by where I don't see somebody doing the above with their nose buried in their phone.
So there is a difference, like it or not. I say let Darwin sort 'em out.