I disagree that Bernie's run was pointless
What Bernie did was an absolutely necessary step that you see repeated over and over again throughout history. The people here that are most disgusted with Sanders (plus Jimmy Dore) want revolutionary change now.
That's not how things happen IRL!
Historically it's necessary for the moderates to get fed up first.
How about an example closer to home, and more applicable.
Before Pancho Villa and Emiliano Zapata chased the government out of Mexico City, a wealthy landowner named Francisco I. Madero challenged the long-time dictator Diaz in the 1910 election.
Madero wanted modest, common-sense reforms. Kind of like Sanders does.
Diaz rigged the election to win. The people revolted in Madero's name and Diaz fled. (this was the official start of the Mexican Revolution)
The next year Madero was elected president, and the peasants expected great things. But Madero wanted incremental changes, and took pains to appease the ruling elites (including not doing any land reforms), so the people got apathetic.
Meanwhile, Diaz' old crew didn't care if Madero didn't want any serious changes. They wanted ALL of their power back. So they engineered a coup and had Madero shot.
This is where Villa and Zapata come in and the revolution gets real, and where millions died.
My point is that you were never, EVER going to get a significant percentage of the people demanding revolutionary change until the system proved itself incapable of reforming itself.
This is the role Sanders performed, and he performed it as well as can be expected.
His demands only seemed radical to a totally corrupt and calcified elite. They had to prove themselves to be totally incompetent in the face of a crisis, and they have done so.
Does that mean that we are headed for violent revolution?
Probably not. But all of the preliminary elements have been put into place.
The working class would certainly be justified in taking up arms.
What is likely to happen next is the government's violent suppression of peaceful, starving protestors. Possibly even a massacre, that they will blame on the hungry poor.
That's what ruthless, greedy oligarchs tends to do historically.