1. I never said you were. I said white guys like them really don't get why anyone with a modicum of manners doesn't make up a word, apply to everyone who disagrees with them, and then act offended when they act offended.
Note that what they're doing is the same thing as you imply I'm doing with race: you're saying that whenever I hear something I disagree with I call it racist no matter what the actual argument is. What they're doing is whenever I say something they disagree with, they say "that's social justice bullshit."
Thank you for proving my point.
2. Who cares whether you "let me" do it. The fact is their slate got rejected by their own voters due to a combination of their over-aggressive tactics and Vox Day. That is what actually happened. Several were quoted at the awards ceremony saying they agreed with many Sad Puppy arguments but voted No Award anyway. The Sad Puppy point lost partly because it was being argued by a guy everyone hates. This is not uncommon. It is the reason nobody has asked Dubya's endorsement for anything since he left the White House.
3. The only social justice movements in the 60s were against sexism and racism. In fact they actually called themselves that back then. If you don't want me to believe you don't oppose the Civil Right movement don't a) say you want shit to be like it was back then, and b) deride your opponents as being Social Justice anything.
Hell if you want to actually have an exchange of ideas at any level don't use that term. You made it up as a slur, which means my response to hearing you say it is not gonna be "he's probably a nice guy, I have a moral duty to give him the benefit of the doubt." It's gonna be "fuck that guy." Particularly if that guy is in any way associated with Vox Day.
4. And what possible rule change can eliminate brigading at voting? It's trivial to do it in nominations. You could restrict everyone to three nominations and still have five nominees. You could eliminate the fan-nomination process completely and have a committee of winners determine the nominee list, or have the guy who runs the con write the nominee list. Any one of those rules makes the Sad Puppy system technique virtually impossible. But you can't have a rule that says "you can't vote for that guy for short story AND that other guy for novel because we found a website advocating both of them" without banning all fan voting or adding a whole bunch of by-laws to prevent the Sad Puppies from producing a bunch of fake internet slates combining all possible combinations of ballot that they dislike.
Which puts this in a completely different tradition: that of trolls dominating something for a short time period, getting themselves banned, and then declaring victory anyway because "we made our point, and we didn't want to not be banned anyway."