Could it be that these kids are literally being followed by adults with cameras on them at all times? Could it be that they're walking through cities where people don't drive ford f15,000s 30 mph over the speed limit?
No, it must be because japan is "homogenized" and makes pedo porn
Or maybe appropriate parenting depends on material and social conditions so a one-size-fits-all approach doesn't make sense.
Also, a 4 year old probably isn't going to pick out the best apples in the bunch but if you're trying to maximize your apples per yen you're probably not sending your kids out to do shit.