The children in these programs have not rights and the (few) parents who actually cares about their children but have ordered such a tragedy, have no idea of the abuse in these programs.
And if the parent are present, he has legal right to stop and leave at once, when it inevitable turns from therapy into abuse.
That is what makes "Brat camp" season 4 acceptable. If the parents witness abuse, he also is legal bound to stop it or he himself would be target for a suit of child abuse.
And almost every parent would stop any act of abuse against his own child when he sees it. Also he would not accept it on himself unless he is some kind of masochist.
There was actually two good things in this serie.
1) Ben's mom pulled her family.
2) Amanda's parents pulled her, when she reported abuse (She entered a new program alone after the first one). They have been there themselves. They have looked the instructors in their eyes and knew what kind of molestion such people will be be prepared to do. So they believed their daughter even though the claim was fabricated.
I have never heard of a such act of charity when they pulled their daughter.
I have this adwise to parents: Rather pull your children 20 times as result of a lie than not pulling your child and getting a corpse or a zombie returned.