Then lets review. You said -
Okay. dudalb is one poster (ETA: much as even his position isn't really that "once the GOP begins their smear campaign," so much as a more general certainty that Bernie will lose because of "moderates" not voting for him). Who are the rest of these many posters that we keep hearing about?
Rather, there's been quite the trend of various posters who have raised one concern or another and been attacked with, for example, this hyperbolic complaint about the concern and been forced to clarify that no, they weren't saying the thing that you're trying to complain about. It's annoying. Especially when it's been repeated as many times as it has been.