I find the idea that large families are automatically neglectful ridiculous
Once you get to the point that there physically aren't enough hours in the day to give them all the level of time and attention that children need then it is automatically neglectful. Once you get to the point where the older children have ti help raise the younger ones then it is neglectful. Once you get to the point where you can't remember their dates of birth (Noel) and don't think they need friends or activities outside of The Family then it is neglectful. Once you have so many children that the size of your family impedes on the opportunities you are able to provide them with then it is neglectful.
Nobody is better than this family, they are just kidding themselves and yes, seething with jealousy, not a pleasant attribute.
I am better than them. I am emotionally available to my DC and took the needs of my existing children into account when deciding whether or not to have any more. I make sure my children get time as individuals as well as time together as a family. They get to go to activities if they want, have friends, go on playdates. My older children are never responsible for the care of the younger ones. I listen to them read and help with their homework. I put them to bed individually. I don't lock them in their rooms overnight. I'm aware of what is going on in their lives. My husband has never engaged in sexual intercourse with a 13yo child and would find the idea of doing so utterly abhorrent as all sane adults would.
You need to have a read of a dictionary, jealous does not mean what you think it means.
The Radfords are not aspirational and their lifestyle is not one to be coveted or encouraged.