Cops and CPS can't be bothered (note I never personally called them, although I have had to address the children directly to ask them to stop stealing from my house). I still prefer that to a "safe" place where my kids have to risk getting ripped away from their parents for walking to a park.
The key to not dealing with police is moving to a high crime area with a weak police presence. These kind of CPS paranoia stuff is generally not enforced in places that are actually less safe for children. If the area is safe, that's when CPS/police will have the time to focus on you to call it unsafe. That is, kids aren't really safe from CPS of accusing them of being unsafe unless it is actually unsafe, in which case authorities never responded in the first place because CPS and the police are busy visiting an abandoned crack-baby.
https://www.npr.org/2018/04/01/598630200/utah-passes-free-ra...
I live in the midwest, in a smaller town. You still see kids playing in the neighborhood and parks and running around. Kids walk and bike to school. Nobody would call the cops over a kid walking by himself unless he looked to be lost or in distress.