If high STD and drug use rates tell us anything, it's that these young people are, on average, too immature to assume adult roles. I adore the feelings of achievement that being an entrepreneur/adult have brought me, but at the same time I recognize the fact that "being a kid" wasn't as bad the article makes it out to be. I spent most of my time playing video games, hanging out with friends and, yes, doing drugs! OMG! But you know what, at the end of the day, it was still fun.
I think we as a society should do everything in our power to encourage young people to focus on school so that they don't get dragged down into the worlds of drug addiction, poverty, etc. However, the reason I had so much time to dick around during my adolescence/teenage years was mainly because school was far too easy and not engaging enough. The entire schooling system is not nearly as progressive as it needs to be. Furthermore, there are not nearly enough reasons to excel at it. Working hard in high school just means you can get into a good college where you have to work even harder (and, unless you really excel or are financially secure, take a long-term monetary hit for the privilege) and the reality is that where one attended college is rarely relevant today.
School should be designed to provide useful knowledge instead of information that is merely cataloged, regurgitated, and forgotten. It should encourage and enable young people to find something they are passionate about and learn relevant things about that and gain useful experience in the process. The only classes that I worked hard to excel in and go beyond the bare minimum were programming and writing courses. It should come as no surprise that these are the two topics I am most passionate about to this day.