No disrespect, Usonian; it's not on you. I fully agree with your points. But it was 1972 when McGovern ran for POTUS. Democrats have promised or hinted at most aspects of this for over 50 years now. Nothing like it has passed. I've grown a beard waiting for it. Literally. The Party is a "big tent," where one group cancels out the other. One might be forgiven for thinking that was by design. It is run by liberal moderates (Newspeak for conservatives) who REALLY don't want to see any of this stuff become law; assuming the Party ever gets the chance to legislate sometime in the future. At this point that seems unlikely. It's not quite dead, but it's not at all well. They're happy to let Bernie and AOC talk and hold rallies when the Democrats are out of power, but seem happier paving the way for another GOP landslide through inaction and bipartisanship whilst they're in power.
It's not me or many (most?) of us you need to convince. It's the folks at the pinnacle of the Democratic Party hierarchy. They seem remarkably uninterested in any such programs, or of having a program at all. The Party should be wanting to develop an EFFECTIVE media/propaganda machine. Yesterday. They then should probably develop principles and a program as you have outlined, and demonstrate their commitment by expelling elected official who don't adhere to said principles (I'm thinking Fetterman, Cuellar, Golden, etc., as possible candidates). But until those things happen (and others that will come to me the instant I post this but not one moment before), expecting "swing voters" or non-voters to "see the light" seems a stretch.
Political parties in nation states are hierarchies. And a fish stinks from the head.