Well, this sort of behavior has (presumably) already happened [1], but this also gets to the crux of "unintended consequences". Will we see kids deliberately walking in the street, knowing full well they aren't going to get hit and extorting drivers to let them pass?
Yes I'm sure this sort of thing will happen however I imagine the overall social consequences would be beneficial. Children are highly confined at present and the ability to roam and talk to different people, walk to school, etc, has been lost. Largely for fear of their being run over by traffic.