I can only assume because a disabled child is considered more expensive and needful than your average child. Things like additional childcare, therapies, time required by parents, etc… Parents spend a lot of resources the first 4 years while a child is totally dependent. Things improve as the child grows and gets more independent. It’s reasoned a disabled child does not have this path towards growing independence and continues to require the same intensive time/money as a toddler. It also acts as a carrot for families to take care of children in their families with disabilities rather than foster care.
Sadly, in the case of awful parents like Kim the money just subsidizes mom’s fast food, smokes, soda pop and bad decisions. It’s a helpful bit of money for poor parents who care and more money to piss away on stupid shit for dumb cunts like Kim and Sammy.
Many of the Dx in these homes come from the dreadful home life the kids exist in. Neurological deficits are caused by neglect and abuse. It’s one reason the birth to 3 programs were created, to try and prevent “speds” created by environmental conditions and shitty parents. I have no doubt Aiden qualifies for birth to 3 but Kim avoided it because the social workers involved would have caused her trouble. Any child Kim has she will rush to get Dx as disabled as soon as they turn two, if there isn’t some physical issue that allows them to qualify before then.