I'm going to say, as a child of the '70s, that with proper parental supervision children can survive their parent's "alarming lack of concern for the well-being of children".
As another child of the 70s, I can tell you that even without proper parental supervision, children can also survive dangerous activities and construction projects that would invoke a visit from Child Protective Services these days.
As another child of the 70s, I can tell you that even without proper parental supervision, children can also survive dangerous activities and construction projects that would invoke a visit from Child Protective Services these days.