Neglect laws are written too broadly, giving too much discretion to CPS to decide what constitutes neglect or inadequate supervision. There have been a couple cases IIRC in Florida where parents were arrested for letting their kids walk/play in parks alone, albeit these were very young children.

Outside of that, there's increased traffic and the US as a whole is way too car centric. Suburbs are horribly designed, and we prioritize moving cars instead of moving people, and any kind of infrastructure design that might slow down traffic, reduce the need to drive, or mildly inconvenience a driver gets shot down.

There is a very real danger of getting killed by a distracted idiot in a car, and that risk is much higher today. I commute on I5 every day for work and every single day I see multiple people, going 80MPH watching tiktoks on their phone on the dash mount, or obviously looking down texting. I can't blame anyone for not wanting their kids running around the neighborhood when we can't even be responsible enough to pay attention when we are driving 2 ton death machines.