I think you're missing my point. The problem isn't the question - it's the fact that Balmer was objectively wrong about the answer - and he never changed that determination after having conversations about it however many times. ("I asked this question all the time.")

It doesn't matter that it was difficult to prove he was wrong. The issue is that it was impossible to prove he was right. And if anyone ever tried to bring that up to him, he never once heard them.

I believe an interviewer who is wrong and does not listen to you is a perfect example of the broken process. Especially given that he was an industry leader - in this interview he was providing a historical example of the process' merits - all while being entirely incorrect.