Of course it is abuse. The mother is using depression as an excuse for laying in bed, smoking and letting her mother do all the work. And his sister is 18, it didn't mention if she worked or not or if she could perhaps take on some responsibility for the food shopping as the mother obviously cannot cope. (I know I sound hard as nails but I do think depression is used far too often as an excuse, I have experience of depression in loved ones and there is a difference between real full-on depression and feeling blue.)
Judging by the house it isn't a particularly healthy environment for the boy to be living in anyway. I didn't like the tone of the reporter, like because they live in social housing they must be dogs? Sorry, but that is just crap.
He demands food, they give it to him. The grandmother was just as bad, why doesn't she take him for a while if she is so worried. Don't give him 5 slices of toast for breakfast might be a start.
This story, and the programme just annoyed me, at what point do you not look at your child at 14 stone and think, I really need all the help I can get? If they can take a man to court over an 11 stone dog but not a child - what does that say about the country?
(I'm heavy myself, I made sure from the offset that despite living in social housing and on a low wage my dts would eat proper food. I'm a 5'8" adult, I do not weigh what this child weighs. Enough.)