Then don't let your kids do it?
I'm sure there could be negative consequences, but I'm sure Brian will hold himself and his staff to high standards in the conduct with and presentation of these kids. In light of that, he's made a rule for himself (that is an important part of the business he runs). I'm surprised that's surprising to you. I mean, there are "potential negative consequences" to driving a car, or drinking beer, but you probably don't have moral qualms about those things. Brian can't control what everyone else does on the subject.