The article strikes me as ill-considered.
I had school friends back in the 1950s and 1960s who suffered dreadfully because their parents were "staying together for the sake of the children".
Since then, I have taught children during a period extending from the 1970s to 2013.
Yes, more school-children have birth parents who have divorced and usually found a new spouse.
All children deserve a loving, stable home and most actually have one, or even two. These loving, stable homes can consist of a single parent with one or more children, divorced parents who have the child or children with them both, turn and turn about, a divorced parent who has remarried and has the children of the first marriage with her or him in the new home, or of a divorced, remarried parent who married another divorced parent, so we have your child, my child, and quite often "our biological child or children" as well.
Whether these constellations work or not depends on many factors, but usually if they do not work, or do not work well, it is not the fact of divorce that is the cause of things not working out.
Children in care? Many would not have needed to be taken into care if their parents had got their act together and divorced each other.
Children are in care for many reasons, but normally because of one or other form of neglect or abuse, which might and often could have been avoided, if the non-abusive parent had taken the child and packed up and left. She or he didn't, and the whole sad story was revealed when a teacher or neighbour reported the children's condition to the relevant authority.
I have had to do with children who were in care because their parents were addicts or abused their children. I never recall having a child in any of my classes who was in care simply because his or her parents were divorced.