Given the narrowness of Biden's win against a totally discredited incumbent-ANY Democratic nominee should have been able to win by at least ten to twelve points in 2020, and gain House & Senate seats while doing so- the "Biden is the ONLY one who could beat Trump" narrative has been proved to be utter bullshit, and we can already declare the "Trump can only be kept out of the White House by imposing yet ANOTHER corporate centrist as nominee" narrative must be declared stillborn.
Turnout matters.
The base matters.
Democrats can't win in 2022 OR 2024 by distancing themselves from the base and once against focusing on the "suburban swing voters" that have been proven to not really exist.