Young people just use their motor skills differently, for example for computer games or juggling (pen spinning, cardistry). These skills are now much more available thanks to YT and Internet in general.
I think there is a good case to be made that kids actually learn much faster than ever, thanks to things like YT and Wikipedia. Before the Internet, it was very difficult to connect to really skillful people in the world, there were pockets of talent but really disconnected. If you were outside the pocket, you were pretty much screwed. Today it's not the case.
Of course you can question usefulness of the skills learned, but that is a separate question, I think. Fashion in these skills is probably faster than in the past, for better or worse.
I think there is a good case to be made that kids actually learn much faster than ever, thanks to things like YT and Wikipedia. Before the Internet, it was very difficult to connect to really skillful people in the world, there were pockets of talent but really disconnected. If you were outside the pocket, you were pretty much screwed. Today it's not the case.
Of course you can question usefulness of the skills learned, but that is a separate question, I think. Fashion in these skills is probably faster than in the past, for better or worse.