I agree, he doesn't have to be jailed or something, it might have an effect on him and even to his life. He'll be consider convicted/felon rather than a violator. Fine would be enough but having him locked up even 3 weeks in prison will have an impact on his life. Much has been said, we don't even know if that man is aware of such crime just like that, maybe he just want to share it to others that haven't seen it with a good intention.