It might put a little dent in his arrogance. But he probably tells himself "they know not what they do".
I honestly don't think this guy has ever thought he doesn't know more than everybody and certainly not that he is ever wrong.
IMO he is probably insulated from a lot of this information. I don’t think his poll numbers are mentioned on sports broadcasts, posted at the golf course, or announced during his parties. So where would he find out about them? Can you imagine anyone on his staff saying “BTW, Barry, 55% of Americans think you’re horrible.”