I think it's important to understand that Bernie isn't at fault, it's the centrists. In fact, it's vital to understand that.
The idea of blaming Bernie is central to the centrist tactics of sabotage. MLK is the one who said the moderates are the ones to watch out for. To this day, Bernie and other progressives are the only ones talking sense. It's not a weakness that they're willing to compromise to avoid absolute disaster.
You'd think we could all unite in finding our common hatred for the centrists. It's early in this narrative and few people are promoting it, but it's the truth. Thanks for your thoughtful comment!