You can't have it both ways.
You will trot out some shytty poll about Bernie's favorability, yet he failed several tests when it came to special races and where to throw his support in volatile seats!
You don't get the fight you want, you get the fight you have. Bernie has failed to fight several fights with the facts on the ground. He's done that shyt his entire career.
So yes, the DNC has fukked up on several levels in terms of administration and management, but until you accept Bernie's political and strategic flaws, I won't drop this point.
Oh, and stop ignoring the role of anti-Obama racism. It was enough to mobilize Trump voters, how do you ignore this role since 2008? Obama won the White House and could never do enough to keep them for local democrats. Every anti-Obama sentiment was focused on the notion that he was never able to do enough for reasons you and I know why.