I mean, not saying they should be burnt at the stake or anything, but parental neglect is also very much a form of abuse
Depends. In this case they have nannies and servants that fully provide for their children.
The only way neglect becomes abuse is if the child is starving or uncared for. In this case we can see that although the parents aren't as directly involved as they should be with the child in terms of nurturing they indeed do care. They make sure the child is well fed and has proper care in terms of daily necessities and social standing.
I honestly do not see any signs of abuse. Some neglect yes and while I agree neglect can become abuse but not in this case. The parents clearly care and the children know it. Just not as much as they actually should.
This is good. As for the people hating on the family. Ye they ain't good but they're not abusive in any way. People saying they'd want his family to burn are wacko in themselves.
His parents aren't amazing nor would they be counted as good but they're not horrible. They care in their own way albeit neglectful I agree. But not to the point of being abusive nor to the point where I'd categorise them as abominable.