None of those arguments were meant to hold up. They exist only to plug the holes in the "would you rather have Trump?" discussion. They were presented as true and or being grounded in some kind of objective reality but if you stopped to reflect on 2008-2016 for two seconds it was immediately obvious that it was nonsense. But you're the unreasonable, unrealistic Berniebro and so there isn't much reason to defend this argument from the respectable center as it's largely tied to the thought terminating cliché of "would you rather have Trump?". Biden in any line of argumentation, if you took the time to unpack it, was in the superposition of almost as good as Bernie and not a radical, someone who could pull white moderates. Both of these couldn't be true.

It was kind of obscene that the argument he listened to the changing will of the people to handwave his direct hand in many of the issues he was promising to address. Unfortunately for liberals, they seem to love outing themselves in their memoirs (a tangentially related aside, when HRC described her slave staff in the AK AR governor's mansion, the inmates who were staff were convicted of assault/murder and specifically chosen because they presented no danger, begging the question why are they still incarcerated). Obama's most recent memoir giving away that if you network and fundraise among the high net worth crowd, you subconsciously adopt and begin to consider the class interests of those donors first. As Obama described it, literally becomes your ideology. Biden hadn't and wouldn't change. He simply got a marketing facelift.

Furthermore, it is obvious that battle lines are premediated behind closed doors and liberals kowtow around intraparty consensus in a party that runs the ideological spectrum from pro LGBT neocon to DSA-M4A-regieme change. Seeking bipartisanship is the cherry on top to guarantee no change while being able to lay the failure at the feet of a few individuals. Individuals who will be shielded by vote blue no matter who with no real introspection into the functional difference between an pro-LGBT neocon and a neocon. At the Federal level there is none. Not a finger in Congress has been lifted to protect trans comrades from barbaric state legislation.