Thing is, I’m not sure how making fun of the OP doesn’t make you just as big an asshole as he was. This didn’t happen to you, so you have no reason besides recreational outrage to be upset about it. So you can’t use that as a justification.
Do I think saying your someone’s better is stupid? Hell yeah. Do I think it says a lot about the person we are talking about? Of course. But no more than what I already knew about the guy. He’s admitted he feels no compassion for other people.
You know what that means? Social ostracism isn’t going to do shit. Thus its sole purpose is to make you feel better. Exactly the purpose of the OP for complaining here in the first place.