Which begs the question.....why would they do this? I’m leaning toward, “they know there isn’t a chance Biden/Harris will win.” It's an act in a play. A losing team they could pretend had an election stolen from them. They’ve moved beyond a Presidential election and are working toward a complete and violent takeover. I keep thinking back to Van Jones during the Obama administration when he proclaimed “top down, bottom up, inside out”. A card-carrying Commie giving us all a glimpse into what was coming. Hillary was Plan A, this is plan B.
It's what happens when you spend $2 billion on "political consultants."
Trump changed the game. There are hundreds of political consultants - these are the people who advised Romney, McCain and Hillary (think of people like Rick Wilson,) who are terrible at what they do, but are great at selling themselves as the smartest people in the world.
Get enough Rick Wilsons in one place, take their advice, and you get the Biden/Harris ticket.