What happened to childhood?

Kim Brooks, We Have Ruined Childhood, NYTimes, 17 August 2019:

According to the psychologist Peter Gray, children today are more depressed than they were during the Great Depression and more anxious than they were at the height of the Cold War. A 2019 study published in the Journal of Abnormal Psychology found that between 2009 and 2017, rates of depression rose by more than 60 percent among those ages 14 to 17, and 47 percent among those ages 12 to 13. This isn’t just a matter of increased diagnoses. The number of children and teenagers who were seen in emergency rooms with suicidal thoughts or having attempted suicide doubled between 2007 and 2015.

Children's lives are too regimented:

No longer able to rely on communal structures for child care or allow children time alone, parents who need to work are forced to warehouse their youngsters for long stretches of time. School days are longer and more regimented. Kindergarten, which used to be focused on play, is now an academic training ground for the first grade. Young children are assigned homework even though numerous studies have found it harmful. STEM, standardized testing and active-shooter drills have largely replaced recess, leisurely lunches, art and music.

And so for many children, when the school day is over, it hardly matters; the hours outside school are more like school than ever. Children spend afternoons, weekends and summers in aftercare and camps while their parents work. The areas where children once congregated for unstructured, unsupervised play are now often off limits. And so those who can afford it drive their children from one structured activity to another. Those who can’t keep them inside. Free play and childhood independence have become relics, insurance risks, at times criminal offenses.