I do notice it in some people, though by no means all. I think a lot of it is that people raise their kids differently these days, no one dares to even correct anyone else child no matter how gross the offense.
When I was a kid, I could expect to get spanked by any adult if I misbehaved and again by my parents when they found out about it. When I was kid, you didn't get a ribbon for anything unless you were 1st, 2nd, or 3rd place. Now EVERY kid is rewarded - even for no effort. So what have you just taught that kid? That he is owed it, he doesn't have to earn it. And don't dare correct him for anything, one of his parents will chew you out, punch you out, or threaten to sue.
That's only one of the possible causes, but yes, I have noticed that more and more. And this thing of kids slapping their parents (I saw it the other day in a fast food restaurant). I'd have been put in the ground and wouldn't be posting this now, if I'd dared such a thing. The thought would never have even occurred to me, let alone would I have possessed the balls to actually do it.