I actually think Trump is not showing up because he can get more political points with that. I doubt he is afraid of Megyn or her setups.
Fox News is doing everything it can to make itself look stupider and stupider and thereby make Trump look smarter for saying “No Thanks”.
They announced that they will have three “YouTube Personalities” as quasi moderators asking questions. Among them - an illegal alien activist and an Islamic activist. It almost makes you wonder if they tried to get Bathtub Fruit Loops girl but she was unavailable.