It’s not the maga group Biden needs to convince. Doubling down when they’re already all in doesn’t mean much.
He’s trying to win an election so it’s the various “I don’t want to vote for Biden so I’ll vote for trump or not vote” in swing states people he needs to be moving. To those people, Trump trying to go on an unhinged Twitter tirade at a debate could be persuasive. At least that’s what a lot of Dems, and according to this GOP, think is going to happen.