I didn't claim that was his motivation, I claimed it was the practical outcome of urbit, and it is. His presence prevented a great many people from attending lambdaconf because they had a legitimate fear of the racist violence he advocates, and refuses to recant. You'd have to work a lot harder apologizing for fascist bigots to make me feel any embarrassment for calling out their negative impact on communities I care about.
Claiming politics is out of scope is absurd, and is a rhetorical mechanism designed to, at a minimum, preserve the status quo. His politics are abhorrent -- accepting his declaration of them as irrelevant when they're anything but is effectively siding with them.
Most of the criticism of Yarvin is by those unable to distinguish between descriptive and normative ideas. His writing is a giant "what if" that mainly rejects the provincial notion that only today's common views are the most sound.
I'd bet that the adjacent commenter's idea of "[his racist advocacy] is well documented" comes from Twitter and Tumblr quotes taken out of context, cyclically retweeted in outrage.
Claiming politics is out of scope is absurd, and is a rhetorical mechanism designed to, at a minimum, preserve the status quo. His politics are abhorrent -- accepting his declaration of them as irrelevant when they're anything but is effectively siding with them.