More importantly you’d see it in Biden’s actions and the actions of his party and supporters. Instead you see the opposite.
I will go one step further and say the reason that he goes back-and-forth is that he is only reading/saying what his advisers right for him. He’ll run out to a camera and talk about unity and then a day or two later see the complete opposite. Someone is just pulling the puppet strings and making him read the speeches that they want him to.