That being said, none of the facts presented here indicate that CPS action would have been warranted.
I don't know how supervision would prevent playground injuries. I broke my arm in a soccer game when I was 9, surrounded by adults. Life went on?
Which is how (and why) I learned first aid, when I was - I can't even remember how old, single digits anyway.
Right-wingers in the US would give their children guns before they gave them basic life skills.
How many of them would still want to put hands on a 7 year old if it means possibly getting their guts ripped open by the tool-wielding equivalent of a velociraptor claw?