We have more power to select our democratic candidate than you might think. The primaries in 2020 were our opportunity to select our democratic candidate. Far less people vote in primaries than they do in the general election. Biden won the primaries, so he got the Democratic nomination. If more people voted for primaries we could have a more progressive president. It just turns out that a smaller subset of our population gets to pick the Democratic nominee
You say that as though the entirety of the DNC leadership didn’t unite against Bernie Sanders when he was the clear front runner over Hillary. And again, in 2020. I agree, more people need to vote in the primaries. But there is clearly meddling and coercion happening behind the scenes to ensure an appropriately corporate candidate is selected.