I have no idea who the interviewer was but if:
1) Chael was being serious and NOT doing the WWE thing, then yeah that interviewer was a dick and I'd have left too. He was being patently antagonistic and only trying to get a rise out of a guy known for his rile-ability. I'd like to think MMA can promote fights without turning into the WWE and we really don't need fake-ass pseudo-sportscasters trying to prove me wrong.
2) Chael was working the showbiz angle he was doing a much better job of it than the interviewer. That guy was awful. I don't think Chael had to work very hard to get irritated with him if he was putting on an act.
Then again, what do I know about promoting a fight. Any way you look at it he's an entertaining guy who can actually fight. What's not to like?