Any of my comments may not be welcomed by 51ers.
Child welfare starts at the hospital, which is part of the child welfare system.
I am not sure whether the author means if anything not right with the newborn, CAS will kick in. It is true.
The program originated in Hawaii, all newborn in Ontario will go through the Baby Best Start assessment. If the doctors and nurses believe the parents are incapable of taking care of the infant, e.g. against medical advice, incompetent in feeding, and etc, they will call CAS.
That may be the reason why the author felt the need to flee from the hospital.
You may argue the hospital did all the procedures including the Baby Best Start because the hospital and CAS need the funding from the government.
从我的分娩经历看加拿大医院的优与劣