We’ve turned classrooms into labs
That behaviour has been redefined by clever manipulation, and corruption of what we know to be normal.
One of the items, describing inattention, used to diagnose ADHD, is: “often avoids, dislikes, or is reluctant to engage in tasks that require sustained mental effort, such as schoolwork or homework.” This is descriptive of a normal child, in a normal school or a normal home, on a normal day, in a normal world, but psychiatrists would have us think otherwise.