They chose Biden to be a part of the ritual because he's an idiot, and it's unbelievable, but that's required for the illusion; to suspend disbelief, to create a false dialectic.

His idiocy is a representation of what they believe our idiocy to be.

That's their favorite thing to do, make you look like an idiot as they lie to you about their own intentions, all the while showing you that that's exactly what they're doing.