You're dodging again. Please answer the questions I've already posed to you.
I'm not dodging at all, and if I've failed to answer your disingenuous questions to your satisfaction I'm happy to try again.
Sanders, unlike Trump, has spent a lifetime espousing the kind of authoritarian, socialist policies that have a history of resulting in exactly what his underling was calling for.
What would be a comparable policy goal for Trump and his supporters? I very much doubt there are any.
You correctly point out that leftist extremism has a very dark past. Like you, I believe that were Bernie to implement his flavor of socialism it would be likely to lead to similar failures, authoritarianism, and collapse because I see those failures as inherent to the concept. However, unlike the violence-seeking underling I do not believe that Bernie believes that his policies would result in violence nor desires that. I believe that is an important distinction.
To answer your question Trump publicly supports policies which (like Bernie) he believes would be net positives but which also have a significant possibility and history of resulting in bad to horrific outcomes. His chaotic middle-east policy, for one. Brinkmanship as the basis for foreign relations for another.
Someone supporting Trump who laughingly advocates a shooting war with China or Iran might be an apt comparison to Bernie's flunky. The point being that neither Trump nor Bernie actually believe the worst might come about as the result of their policies or they probably wouldn't still hold them. Trump believes he can continue to get away with his bluffs and interventions without escalating to full-blown conflict, and Bernie believes he can Denmark us without Venezuelaing us so I think both are operating in good faith. Someone advocating American Gulags or nukes over Beijing is clearly not.
Um, how is it dishonest to draw attention to a political extremist, of an extremist party, within a political extremist’s campaign organization?
As I thought I already made clear, if the purpose was to condemn the low-level flunky for his personal views, or separately if you wish to condemn Bernie for his own actual policies there is no dishonesty. If the purpose is to smear Bernie with the beliefs of the extremist supporter (as has been routinely done with Trump, the NRA, the Republican Party etc.) then it is dishonest.
Which were you trying to do?
All that said, at this stage I think we can safely criticize Bernie for his inaction since the revelation.