This Is Your (Father’s) Brain on Drugs

I never really get what this guy is saying.

Is he saying that adolescence is not “a time of heightened vulnerability for risky behavior”? That there is no such process as brain maturation or plasticity?

I can accept an argument that there’s hype around adolescents and risky behaviors, but does it not have some basis in fact?

I can accept an argument that adults 35 to 54 should be of much greater concern. Does this mean that we shouldn’t be concerned about adolescents?

What exactly does he suggest?