I also think there's a huge amount of talking at cross-purposes here, agendas from all sides. I am obviously speaking from the point of a mother of a child with additional needs, others are speaking as teachers, others as the parents of foster or adopted children who have had dreadful beginnings, and finally are the parents of NT children who see a disparity and an unfairness.
Lots of noise from many vested interests.
I think we could all do with taking a step back sometimes and listening what others not in our situation have to say. I know I'm guilty of this, but as a parent your default position is obviously the needs of your your child.
In the interests of full disclosure, I was one of those people, that thought bad behaviour was down to bad parenting. That was before I had children and life, as is has a habit of, swiftly disabused me of that notion in the most brutal way.
In ashamed of the way I used to think, but, I do understand who people think that way. I wouldn't wish the baptism of fire I had on people and I like to think I would probably have matured and come to a different conclusion eventually, but I honestly can't say.