Obama beat Hillary by having appeal (to vapid fools but none the less). Warren makes Hillary look almost pretty, she’s not marketable. Dem money would make sure Hilary beat her, since they know she (Warren) would tough to elect in November since appeals to no one but the hard left.
Marxism doesn’t win nationally on it’s own, it needs to be wrapped up like a Christmas present.
Your points are well taken. Hopefully, it will NOT be a “Brown Obama” nominated by the DemocRATS. He would be almost unbeatable. Which makes a point for your original argument in the first place.