I've been volunteering with the Dem party since high school, I've worked campaigns and elections at every level in MA, CT, and CA. What I learned is that hardly anyone at all participates. The truth is neither you nor I nor anyone else has actually witnessed a truly engaged and empowered democratic party at the PEOPLE level.
Leadership remains because people refuse to engage.
The precedent has been set. We are playing their game and these are their rules.