This process needed to begin decades ago but since I do not possess a time machine, I will have to accept this process beginning now. Joe Biden has made it crystal clear that he not willing to start the process now. So per my usual copy/paste; He can either commit to this fight or he can convince other people to vote for him.
More to the point, this is about effective use of political capital, negotiating, and willingness to employ the bully pulpit when and where necessary to effect policy...you know, key traits of representative governance at which the Obama administration utterly failed, largely by design. Say what you will about the end result of Republican policy-craft, the one thing you cannot nor should not ever say is they're ineffective, and to wit to even push back against that assertion is to push the topic away from what defines effective governance.
Rule one is you never open negotiations with your BATNA, having already conceded an unwillingness to use hardball tactics or walk away if necessary. Let alone with proven bad-faith negotiating partners. That Democrats consistently do this with Republicans, while simultaneously acting in bad faith and playing hardball with their own left flank when and where advantageous, proves not only are Democrats well aware of how to negotiate, they have neither intent nor desire to do so with anyone but progressives. This in itself is sufficient proof of Democratic bad faith to withdraw support, long before substantive discussion of agenda or platform even take place.
In other words, you start by proposing an ACA expansion if you expect nothing to come of it while blaming Republicans for inaction. Which is exactly what Biden's campaign, ancillaries, and national party are doing, and that's true across the entire proposed platform, from health care, to economic reform, to climate change, to criminal justice reform. Democrats can say they don't want to over-promise and unrealistically raise expectations, while passing what
can be passed, all day, but at the end of it they're still deliberately
under-promising and
lowering expectations knowing full well in that context
nothing substantive will be passed.