Maybe because he is president, he wants to give an air of respectability? In 2016 he was a wildcard doing whatever he could do get media attention in a political system hostile to outsiders.
Biden is genuinely senile anyway, so it's better to let his condition speak for itself.
no bannon this time, or cambridge analytica. In a way he alienated most of the normie cuckservatives he started with, and the only ones left are dumb ass Qanon types. He's just a billionaire Alex Jones without Bannon