@Tokenkindly Yeah, it'd be a mistake to take the Oscar. I'd meant denying him the chance to accept it on stage, with the speech and whatnot. I don't think it would have been too severe to escort him out. "If you jump onstage to assault the host, you don't get to stay," doesn't seem like an unreasonable precedent to want to set.
I actually didn't much like Smith before this happened, so I'm sure that's informing my opinion too. I thought he was good in comic roles, but I think he has about as much talent as Tom Cruise in the more serious roles (iow: I find it more rewarding to stare at a blank wall than watch his movies). By 'entitled', i mean smug, overconfident Hollywood figure who thinks the normal rules don't apply to him. The way he compared his actions to the Williams dad while accepting the award ('passionately defending family') only to have the Williams dad himself disagree ("yeah, no - only ever hit people in self-defense") tracks pretty well with my opinion of Smith.
I'm guessing that jokes are written ahead of time to help segue to the topic, rather than being improvised. I wonder to what extent that was the case for Rock.