It's not about it being the absolute best chance of passing M4A, you could pull the same tactic with a number of issues. it's about getting people ON RECORD that they're willing to solicit votes on the merit of a popular policy and MUCH NEEDED policy in the middle of a fukking pandemic but not willing to actually vote for it. Put them on blast and primary them for someone who's really bout it. Letting them "co-sponsor" shyt just to toss it aside when it's no longer advantageous is WEAK shyt and only serves to diminish the faith that people are already losing in spades when it comes to feeling like someone is actually fighting as hard as we would if we had the status/platform.
"Progressives" are already hated, laughed at and being called 'terrorists', I guess that means treat more lightly in regards to getting/exercising power.
Thing is, even when these people vote against it, they won't lose their primary to a progressive. Its not happening en masse.
Moderate Dems are very clear on their opposition to M4A. As is the GOP. They're proud of it. And the Dems against it will say that M4A means the public option or a buy-in, or the Medicare for America, or the Australian system or Peter Stark's old AmeriCare bill, etc. Which are all btw, superior to our shiddy system right now and quite frankly should have been passed in Carter's administration. But I digress..
Progressives don't have that power on this issue. Even with public support. If M4A movement can't motivate voters or raise big money in a D+12 district against the guy who biggest accomplishment of the past 4 years is protecting the ability of private equity doctor groups to surprise bill people then it can't do anything political. Direct action in the streets, workplaces, at hospitals, in doctor's offices, at drug companies, are the only thing I can think of to attack the public persuasion battle tangibly rather than top line poll numbers.
People like Mark Pocan and AOC will say let's get the cosponsor list closer to the magic number of 218 rather than lose a floor vote 315 to 120 in February 2021 and have the headlines say it can never happen again, panels on CNN/MSNBC touting how it will be impossible to ever pass it, the insurance lobby, hospital lobby, AMA, pharma lobby all advertising on the victory against M4A, etc, and people being jaded.
I think they have merit to their thinking. The Nurses feel that way. As do labor who support M4A.