Per Sil's logic, they probably all consider single parenting child abuse. And would insist that the State take the children of single parents.
Per my logic, discussing contracts and children's share in them re: "necessities", single parenthood is a non sequitur. There is no contract binding a single parent to that status for life. There is binding a child to a gay marriage though. I know you know this legal difference. One is an unfortunate situation that can be remedied, and all hope that it is. The other is a mental prison a child cannot escape from for life.
A child cannot be contractually (legally) bound to the deprivation of a necessity for life. Not even for a week actually.