Brooklyn, Oomis doesnt seem to be living in a bubble, just actually monitoring the kids and making sure they use the cell phone properly.
I see nothing wrong with HS kids having cell phones as long as someone is watching out. Yes, bad things can happen with cell phones, but for safety reasons I would want my kids to have them in high school.
I think most of the time parents are too lazy to monitor and deal with their kids using technology and tahts where the problem lay. Not the cell phone itself.