I could not agree more:
Adolescence became a social construct. Most of the research into adolescence, often viewed in pathological terms, began in the 1940s. Removed from genuine, real-life experiences and confined to a restrictive, artificial mass schooling environment, it is no wonder that adolescents often respond with apathy, angst, and anger. But this is not how teenagers have historically behaved, nor how they behave today in many parts of the world.
What makes it all worse is that summer jobs have disappeared with the volume of low-skilled immigration. Even relatively-prosperous kids have trouble finding the sorts of manual work they need to learn about life. I did summer "landscaping" each year during high school. It was an excellent education.
Also, Donald Trump and the Apprentice Economy