I really struggle to see how people think the interviewer was too harsh. Have you not watched a political interviewer (Fox News doesn't count). Journalism isn't saying "use me for marketing", it's about asking questions that matter.
When someone takes over half a million dollars from people, telling them they'll get a game in 9 months, and then misses that deadline by 18 months, they deserve to be dragged over the coals for those answers. If he was working for a major publisher he would have had that same grilling from his bosses, or fired.
Time and time again in the interview you can see him making wild accusations at the interviewer, attributing all sorts of crazy motives, and each time the interviewer just says 'no, I just want to understand why you said what you said'.
If he gave straight answers, the interviewer wouldn't need to get out the water board.