It's the enfant terrible style. Signals that you are special, and are willing to back it up, so let's just end the conversation. Nice time saver when you actually are special and can back it up. Terrifically destructive for a "B" surrounded by timid people. A good way to drive a team right over the cliff. I've seen a lot of the latter so I tend to react negatively to it. Plus it's never really "nice".