If the parents are controlling which peers the child associates with, then the parents play more of a role than the research accounts for.As I said, is counterintuitive, and something not many ppl are aware of. And even if they are made aware, they blank out and refuse to believe. I think it's normal, for generations the dogma of good parenting stood. They dont like this truth.
Nevertheless, research in developmental psychology indicates exactly the fact that parents has a relative minor role on how the children will turn out to be as an adult. And a truth doesn't have to be liked.