Pretty sure the Iceland thing proved that one. When they made extracurriculars like athletics or clubs mandatory (and obviously supported it so it wasn't a giant effort for the families), teen alcohol/drug addiction dropped handily.
Yes. Theresa a massive cocaine problem in my country largely because of how no one has a clue to form friends anymore. The Irish are friendly but terrible friends. Tons of acquitances but little to no actual bonds beyond a superficial level.