I think it's entirely possible that the filming did make the parents buck up their ideas while the camera crews were there. Which is sobering, if you think about it. They still looked shit as parents, but not shit enough for their child to be so developmentally delayed as he was, especially if he made that much progress in a short time with the foster mum. What I think is this: He obv has some kind of genetic special needs thing going on (possibly inherited from dad?) and as neither parent had any parenting skills nor much between the ears (although I felt sorry for them both throughout) they were unable to deal with his SN. Especially since the foster parents would have access to all manner of services that they would not and fast-tracking to these services.
I read somewhere about a study into parental expectations of 3 yo and how they were so much lower in deprived areas than in well-off areas because of what all the other children were able to do. In deprived areas almost all the children were achieving less and therefore the parents worried less about delays that would cause parents in more affluent areas rushing for medical and behavioural intervention. So people like teachers, SW and HV become even more important in such areas as they are aware of what a "normal" 3 yo should be able to do in a way the parents aren't. In this way it doesn't really surprise me that T&M hadn't sought help sooner for their son. They both had the knowledge (no doubt reinforced by their own (shit?) parents) that they had spoken late, felt they weren't doing too badly despite and therefore expected the poor little mite to work it out for himself eventually.
What I don't understand is why the nursery hadn't flagged up his delays as a matter of urgency and attempted earlier intervention (SALT, child psychologist etc). Or had he only been at nursery a short time? I didn't pick up on that.
Whereas the foster mother was able to provide a much richer and more reactive environment with access to a variety of techniques and services to help him communicate and manage his frustration.
What makes me uncomfortable is that ultimately this is a little bit a battle between bright well-educated professionals, and really not very bright, definitely not very educated poor people. Of course they many not be the best people to bring up a child, but they are the parents of that particular child. Do we propose removing and placing in care all the children of poor, ill-educated and not very bright people?
Having said that, I do agree that these two showed a singular lack of desire to provide a normal and clean living environment for their child, nor to take on board any of the advice given by SW. I do think that the mother made the best and most selfless possible decision for her children and admire her for it.