Bullshit. "Progressives" did no such thing. Progressives are the most loyal and reliable voting base in American politics, with even more consistency than "Bible and flag" conservatives. Progressives also make up the bulk of grassroots Democratic activism and do most of the volunteer work for Democratic candidates. That is despite being shit on constantly, just like you are doing now. Democrats don't deserve progressive votes, but they have them.

congratulations to everyone who marched on every major us city, and took over campus commons across the nation in the spring and summer of an election year...

Maybe Joe and Kamala shouldn't have been supporting a genocide in "an election year". It's funny how you baselessly blame progressives while putting no blame whatsoever on the candidates themselves! It's so incredibly fucked that Biden thought he could run again and that Kamala didn't even seek the appearance of being democratically nominated. We lost to Trump because of gross incompetence on the part of Democratic leadership.