I think Bidens demise began shortly after the scheduled debates began ... and he showed up on stage looking like the useless old loser that he is.
His demise began when he decided to run for the Senate and become a useless one-of-a-hundred guys who don’t do anything with their lives.
Of course, their entire field is nothing but a collection of stupid, do-nothing, useless, mealy-mouthed, pandering, career politician communists. You cannot find a less likable, less accomplished group of people in the entire United States.