Nothing.
The great secret about parenting is that everything you teach and tell your kids is based on your own life experiences. From the high-school dropout who started a small business and worked his way up to middle class, the 9-5 factory worker whose collecting his pension or the college-grad mid level manager, they told their kids the fundamental truths that they learned throughout their lives.
The problem is that the world changes. The advice that they get is not always correct. College isn't the gateway for success it used to be. The majority of the parents out there working the same jobs at the same companies for decades fail to recognize the change in demand.
However, "not always correct" doesn't mean some things still don't apply. More kids are feeling the long-term effects than ever with the increasing college debt, but if you work hard, do better, get as marketable as you can, and don't settle for dead-end jobs, you'll be okay these days.
Some kids get screwed because they thought it would all work out if they got a degree in anything. Problem is, there's a fundamental lack in accountability for these kids. That's not a problem with the parents. That's a problem with a generation who demands the world change around them, then adapt.
That and it's all overblown, like anything. Social media allows us to hear the crazies more than ever. And it's not an accurate representation.