Progressives don’t bother with it because they’ll be ignored either way and you can only be ignored so many times before giving up on them listening.

Unless your contention is that the DNC has literally been changing/destroying primary votes, we simply have never shown up in the numbers needed to make the necessary changes in leadership. “Centrists” have, and they continue to do so. Sitting out does absolutely nothing to advance progressive causes inside or outside of the party.

they’d revolt against their leadership and re-organize into a new far more aggressive left-leaning party

This is literally what we’ve been trying to do through primaries that no one will show up to. We can talk about the need for a progressive party all we want, but a good chunk of the reason the Democrats are the way they are is because centrist Democrats show up to vote in the primaries. Progressives do not.

Found a good use for crowdfunding.