“You have to earn my vote” is very different from “you’ll never get my vote no matter what you do.” You can kind of say whatever you want though, given that the Democrats never tried to earn votes.

You should realize there is a spectrum between “working within the existing Democratic party structure” and “violent revolution.” The former is as unlikely as the latter. But now that I put it into words, maybe you’re right. Maybe all change in America is equally impossible - the establishment is too powerful and entrenched, and the American people just don’t have it in them to fight for anything. Maybe you just have to ride this doom spiral all the way to the bottom and rebuild from the rubble before anything gets any better.