The inherent problem with the DNC is that rank in the party is designated by seniority, and all the current senior members came into power when Third Way politics became popularized.

Third way politics is the actual non conspiracy reason you should hate the Clintons. They popularized it in America as a way to get past the gridlock of Congress that started in the early 90s. Basically they would work with "centrist" politicians on the other side of the aisle on any policy that both parties could agree with. This decongested the grid lock and "proved" that Democrats could be trusted to navigate the center path.

In reality it ceded control over what policy made up the middle ground over to Republicans, who took the opportunity to drag the DNC further and further right. So now we have a "leftist" political party that has been trained for the last 30 years to reflexively make concessions at the whim of the increasingly fascist right.