"Listen to him"
Why? Why the fuck would you say that, man?
I gave Biden a pass for the "Doing the goodest job" flub during the ABC News interview, because how do you answer that question on the spot without sounding like a nihilist? Obviously, he should have said that trust in the system is important and that checks and balances will still be a thing even if he doesn't win, but he opted for the feel-good sentiment of "At least we tried our best!".
But for this? The question was "Trump is already tweeting about you mixing up Vice President Harris with his name and citing it as evidence that you are not fit for office. How do you respond to that?" and he says listen to him. WTF man. Biden is his own worst enemy right now. He could have walked off stage and said nothing.