The argument made by some is that CNN should have given Trump one hour to say whatever he wanted. If he wanted to claim he won the Congressional Medal of Honor at Iwo Jima, no one should fact-check him on that.
I don't think that is journalism, that's a commercial. Media should challenge anyone appearing on it, I don't care if it is Trump, Biden, Zuckerberg, Bezos, or Mark. If you go on their show, they have the responsibility to question your statements. And question why you refuse to answer other questions. The point of media isn't to give one a commercial, one can buy time to do that.