Exactly.
In addition, when the interviewee freely insults the interviewer with cheap remarks like, "Are you a developer, did you actually code the game?", or,"Are you a lawyer?", when he clearly knows he's neither of these things, all bets are off as far as I'm concerned. He actually stole the guys mic at one point!
That's not to say Joe needs to be foul mouthed, dropping expletives left and right as he regularly does on his youtube channel (which I enjoy). Of course there's a standard of professional conduct that Joe should adhere to, but that's contingent on Major Nelson adhering to those same standards.
For instance, GAF loves to shit on Geoff Keighley branding him the Doritos pope and whatnot. But when Don Matrick says something as repulsive as, "We have a product for people that lack an internet connection, it's called the Xbox 360" and Keighley replies with "So that's your message then? Go buy a 360 if I lack internet access, is that really your message?" That's being aggressive without being unprofessional, which is the interview style Joe should have attempted to emulate IMHO.