It's a badge he's giving himself representing the occasions on which he has done harm to real people.
A coordinated online harassment campaign
Speech is not harm.* Damaged feelings are not equivalent to damaged bodies or damaged property. People who believe that speech is harm, and attempt to move the law and culture towards accepting that belief, are a threat to free speech. Heaping hate and ridicule on such people--such as by referring to them derogatorily as "social justice warriors" or "snowflakes"--reduces their social status and is therefore a reasonable and effective method of dissuading new members from joining their vile cause.
Similarly, heaping hate and ridicule on white nationalists--such as by referring to them derogatorily as "racists" or "Nazis"--reduces their social status and is therefore a reasonable and effective method of dissuading new members from joining their vile cause.
One's views on free speech and one's views on race are completely independent of one another. Therefore, Vox Day can simultaneously be on the side of good and of evil. As can his opponents.
Politically, the racists are currently working to re-implement New Deal era immigration restrictions, which is bad policy. The SJWs, on the other hand, are working to abridge or repeal the First Amendment, which is tyranny. That makes the SJWs the more immediate threat, and VD my dubious ally. Much like the free states turning against the slaves states once the British were no longer a threat, or the U.S. turning against the Soviets after the Nazis were defeated, VD can be dealt with after our mutual enemies have been eliminated.
And that kind of thinking is why I love ACKS.
Seriously, though. I am a libertarian who lived most of my life in L.A. If I wasn't willing to game with people with political beliefs I find offensive, I would never have played at all. Obviously, your calculus could be different. And, if someone decides, for political reasons, to withdraw their support from this Kickstarter, or from Autarch in general, that's their prerogative. Just as it is my prerogative to judge them for their cowardly decision.
* Yes, in some cases, speech can be assault. But those cases generally involve people who are close enough to one another to pose an immediate threat, which is generally not the case on the internet ("Those tweets are coming from inside the house!!!"). In any case, as far as I know, no one was actually harmed or convicted of anything during Gamergate or the Puppies campaigns.