I know we arent supposed to have sympathy for fats.  There is a bit of an exception for children. Especially young ones like this. Children are idiots. They want dumb things and aren't able to grasp the concept of consequences, especially delayed ones, like eating too much causing you to become overweight. In this case, it is absolutely 100% the fault of the parents, who I guarantee are butter golems. Parents are supposed to look out for their children, and part of that is working to set up the foundation for a reasonable lifestyle. That this child, at 6, is already well on the path to being yet another lard barge is criminal, and the parents are wholly to blame.