True. All candidates have skeletons. Sanders' skeletons were so specifically repellent to WWC voters that a Trump win would have been considered likely. They matched up with Trump's perceived strengths quite nicely. Sanders would have been opened up like a soft peanut.
This Bernie would have won shit is just not true.
I don't really see how that is the case unless you believe that left wing ideas are inherently bad and disliked by a majority of voters, in which case you would be wrong.
Your skeletons claim doesn't really have merit, when everything Sanders runs on in his policy platform is majority supported by the citizenry, when it comes to expanding medicad social security, and government programs.
Your essentially stating that Trump could have exploited Sanders to a worse degree than he did Clinton, and that would have had to be a miracle to happen when she has a lot more baggage by default.
Hillary and the Democrats have been losing for the past 8 years because all they know how to do is run away from their base for a variety of reasons