Living isn't putting your childhood self or your kids into mortal danger on the regular. There's quite a gap between unsupervised kids doing reckless stuff and knowing putting your kids out into a world not built for adult pedestrians, much less child pedestrians.

My kids still roam, albeit with check-ins, and a lot of training about streets, driveways, and people.

I don't fault parents who reach for trackers or are uncomfortable with letting young kids out of sight. Even back in the day a lot of horrible things happened that weren't reported widely. A family member of mine was nearly abducted off their bike as a teen, if not for a nearby neighbor opening the door when she knocked looking for help.