I think the argument is that growing up with something doesn't necessarily make you good at it. I think it rings especially true with higher level abstractions. The upcoming generation is bad with tech because tech has become more abstract, more of a product and less something to tinker with and learn about. Tech just works now and requires little in assistance from the user, so little is learned.
Yeah, I have a particular rant about this with respect to older generations believing "kids these days know computers." (In this context, probably people under 18.)
The short version is that they mistake confidence for competence, and the younger consumers are more confident poking around because they grew up with superior idiot-proofing. The better results are because they dare to fiddle until it works, not because they know what's wrong.
