I wonder how much if it is confirmation bias on each side. I see certain things, but so do you. You see them in a narrow range where they are surrounded by a narrow range of kids. What if one of them was surrounded later by a different group of kids? And then, they are also often kids from gymnastics who are in a pretty demanding sport. Does it make a difference?

If I look at Smallsteps' friends on average from her current school (music kids) compared to those from her last school (random), it is quite different. How they play together, the issues they have, and the difference in parenting styles are quite clear. Abs this is in Finland, where it is still pretty culturally homogenous.

The "one bad apple" idiom is there fir a reason, but what if 20-30% are bad apples? How long until it is 50% and what then? Obesity wasn't an epidemic, until it was.