I don’t thing a kid is more or less likely to be run over by a car in one neighborhood vs. another, so that really isn’t a distinguishing feature of OB – that one is less likely to get run over by a car there. So your example is not relevant to the comparison at all.
Unadulterated pot may be harmless, but I wouldn’t go so far as to say it is kid-friendly.
I’d worry more about someone in the business of selling pot than the pot itself.