He's right though in as much as they again picked the wrong candidate. Biden has looked weak to the swing voter throughout, Trump has exploited that. Whoever they had chosen would have had faults to be picked at, would have been provided with a childish nickname etc, but choosing someone touching 80 from the establishment was just the wrong decision. They wouldn't have won with Sanders, but needed someone younger, more enthusiastic and invigorating, unfortunately in the corrupt world of American politics that doesn't come with the money required to win the nomination.