It seems like you're focusing on the specifics of what I said without getting the general idea of what I said. The key phrase in my original comment was "or having similar problems". I'm not saying that you must freeze up to be hired by me. All I'm saying is that I consider it to be a good thing if a candidate shows some signs of inconfidence (one of which may be freezing up). That means they're taking the interview seriously and that they're not (too) cocky.