Trying to tone police Bernie supporters to take the focus away from how terrible of a candidate Biden is seems like a tactical misstep. The people who are really toxic won't stop harassing you just because you told them to, and lumping the rest of Sanders voters with the "bros" is only going to make us even more exasperated with this whole process and just sit out the general election. Any sane voter can see this misdirection from what it really is, a lame attempt to take Biden and his inability to speak a coherent sentence out of the limelight and to distract Bernie by forcing him to constantly answer questions about bros instead of discussing policy. It's weak, and it won't work.