This doesn't look good for Trump from the POV of the typical "non-political voter".
I am HOPING, this is just more of his strategy. Say he's not going to participate to get this in the news with EVERYBODY talking about it,and then say "I will participate if I can have a team in the same room as Biden,and he is free to have a team on the room with me. That way there can be no cheating."
How could Team Biden refuse that,especially after the days of posing and making statements about how "Joe is ready,why isn't Trump"?