I agree. I've always thought that while Hillary's loss was because of how awful she is, running Bernie would not necessarily have been a win for the Ds. His socialist economic policies would have been pitted against a guy who knows a Hell of a lot about real world economics than Bernie could eve imagine. It would have been a very different race, but I think Bernie was very vulnerable and beatable.
I really doubt the conventional wisdom that the hoary old white-haired sourassed sourpuss crank from Vermont and his thieving wife would've kept the White House for the Democrats, if he rather than Messalina Agrippina, had been the nominee.
Anything can happen, and usually does. (Something those on the side of decent and civilized people would do well to remember, for the mid-term elections.)
Yet this seems an article of faith among Democrats, liberals, and primitives, that ol' pruneface would've beaten Donald Trump.