In fact, that's not what it says. It says the kids of the 60's and 70's who are already adults are already causing problems today because of attitudes and habit

In fact, that's not what it says. It says the kids of the 60's and 70's who are already adults are already causing problems today because of attitudes and habits they picked up back then. This is not an old argument and a careful reading of the text will show that he starts with the mass movement of children to high school. When Americans lived on farms, we didn't have that. (We had one room schools and my grandmother taught in one as her first job.) The author's premise is that high school changed everything and created a "high school mentality" that's still very much with us -- in people who are now 50 and certainly in people younger than that. He gives numerous examples of how acceptance of this fact is already the norm in popular culture. So he's not bemoaning the kids of today, but the adults of today, and explaining one way we might have got there.