I suppose if you live in a town with 32,000 people who are mostly related to each other, it might be a different situation ;-). There are a LOT of places, however, where it isn't *SAFE* to leave 12-14 year old boys alone. It's just plain irresponsible in many situations.
Back to the original question though, they're his sons. "Dad" trumps "Patrol Leader". Also, maybe there's a medical reason (wets the bed) or an emotional reason. Have a little faith in the dad.