Actually, the guy got punched for insulting someone. He went on to talk about how in New York there would have likely been some warning first. So yeah, insults and name-calling comes with immediate consequences in real life. I think that's acceptable.

I'm not advocating public violence to limit speech or "de-platform" people. We have too much of that already. Rather, the point was to contrast the kinds of things people will say online that they would probably not say in person.