Commended by Mark Zuckerberg (an American), commended by NASA (American agency) invited to the White House (by an American) - it's only his teachers and the police (hardly a fair representation of all Americans) who acted stupidly.
In the light of what's happening in the world today, age makes no difference. Everybody is being wise after the event, but such precautions are necessary.
Yes, we know that now, but as I said earlier AGE HAS NOTHING TO DO WITH IT - handcuffs are used as a precaution, and as already said you are just being wise after the event and don't know the full circumstances which brought about the action. Would you have been so critical if this had been an explosives trigger - no, you would have cried incompetence. A decision had to be made on the spare of the moment as are all like incidents.