I'm just glad he will be okay. I hope there are no long term repercussions from this. He's only 18--so young. I hope he listens to them and doesn't do anything foolish. At that age, you don't feel your mortality and that could lead him to make some unwise decision(s).
That's the only thing that really gives me some concern in this sport and others where you are getting hit in the head on a regular basis and sometimes getting knocked out. You have to wonder what the long-term effects might be. I mean look at Muhammed Ali.