None of Biden’s policies are “real.”
Remember, the President can “propose” but there is little he can do to introduce legislation.
The problem with a Biden win is that it will mean he has coattails. A Biden win might just mean he is riding the coattails of the Congressional races.
That said, if he wins we will see a generally sea change to the progressive wing of the party. They are the ones who will send along the pieces of legislation that are “progressive in nature.”
If Biden loses, it will split the Democrat party. AOC will become the defacto leader for the next two years at least. They will say the moderates lost and are responsible. This will drive more AOC acolytes into the party.
Trump winning now, might set up an AOC run in 2024. That would be downright scary. A Trump loss will almost certainly set up an AOC run in 2024.
Either way, the Squad isn’t going away.
More than likely every thing gets bogged down in the courts, the Ds lose their ass in the Midterms, like in 2010 and 2014. You can’t change the EC without approval of states.