I completely understand what you are saying, but your ENTIRE argument hinges on this statement:
Any fight that depends on democrats leading it is doomed to fail by design.
We have to stop accepting this bullshit. We need to give the MAGA comedy act of Schmuck & Jeffries the hook, and drag them off stage. We have a growing contingent of strong, moral, decent Progressives who are quickly gaining in strength and popularity, and the Midterms are going to see a whole lot more come on board.
MAGA started in the 90s, when hard right Republicans, inspired by Rush Limbaugh's rhetoric, won Congress, and started infiltrating the Republican party. By the time Obama arrived, they'd become the proto-MAGA Tea Party, and thing started to get really squirrelly. Then MAGA fully took over the party, and officially killed the Republican Party, which is as dead as the Whigs, and should only be referred to in a scholarly, historical context. They are ALL MAGA now.
The Progressives have to do the same thing to the Democratic Party. They need to take it over and be extremely aggressive about leading it. We can't just surrender the vehicle that we need in the upcoming political Demolition Derby that's coming, or the MAGA vehicle (probably a SwastiKKKar), will run right over us.
You're right, we can't win with the current Democratic Party, we ALL acknowledge that, so the solution is to armor our Democratic vehicle, get the best leaders, and the angriest citizens, and go to war with MAGA. We face unprecedented problems, and we require unprecedented solutions. We can't just fall back on old bad ideas, and old bad defenses. Obviously, what we did in the past didn't work, so let's stop assuming they are the only defenses against MAGA. The old ways didn't work, so let's create NEW strategies, and not just surrender in advance because Dems won't fight for us.
They are our Army, FORCE them to fight for us.