As pattmarty writes below, it could be wishful thinking.
A Sanders "revolution" will run more on the timescale of the similarly named Reagan Revolution. It most certainly will NOT be the stereotypical banana republic coup. As mentioned in the article, here in Ohio we are fighting against the gerrymandered Republican districts to achieve more proportionate representation. (Although one Green candidate I spoke with had no liking for an improved proportional system that might get at least one Green rep in our state legislature.) It will be a long haul.
As for your complaint about journalists and pundits, I can only affirm what you are saying. I listened to Tom Ashbrook's show this past week with a discussion of the Dec 19 debate. Of the three, you would have to think the pundits and journalists possessed as much wishful thinking on Hillary's (should I begin writing the Clintons' ?) strength as this article places on progressive demographic turns. Any journalist on these radio panels should at the very least be up to date on discernible campaign achievements, i.e., separating website claims from likely voter movements.
And I'm going to throw in one more least mentioned news item from last Friday, Dec 18. I received a breaking news alert on my NYT app that the UN Security Council voted 15-0 to establish a cease-fire and peace proposal for Syria. Any details in the major news outlets thereafter. None willing to reach me.
But think of the impact. A cease-fire in the next 90 days could clear out some of the weaker of the 50+ groups (according to Wikipedia) engaged in the fight. A cease-fire would take away some of ISIL's fuel or at least expose their conflation of Islam and butchery for the crime it is. Further, should that follow, all the hoo-rah here at home would seriously deflate the Republican terror angle, if any voting R's have courage to evaluate facts.
Okay, I better stop before my wishful thinking gets the best of me.