THEN spend the rest of the article contradicting that by insisting only a few off on the farthest left of our caucuses are today's Only True Democrats?
This article's its own oxymoron, but it's worth reading about how goals and values attacked by the right as radical (nothing new about that) have long been held and practiced by Democrats.
Btw, this KIND of behavior, attacking the large Democratic majority instead of uniting to further the claimed goals, is EXACTLY why I don't support those who behave this way. It's not the issue positions, it's the behaviors that sabotage those very goals.
I read history too, and regardless of nation, this wired-in need to attack those who hold power on the left and inability to work with them is the precise reason they virtually always fail to achieve their avowed goals. Our nation's big progressive advances have always been achieved by Democrats, usually against their opposition and in spite of them. Like the New Deal and the still-embattled ACA.
It's also why the parties they've occasionally managed to form in this country always fell apart: same behavior on a smaller scale and disagreements constantly turned into litmus tests and circular firing squads.
Btw, note that the Working Families Party is emphatically not made up of these sorts. They promote labor right and progressive values. But they seldom run their own candidates since they're so small and instead endorse Democratic candidates who best reflect their values and goals, this time Elizabeth Warren for president.