I'd say the practical political purpose is to normalize the idea of extreme power disparities and mass disenfranchisement, and of course the everpresent edgelord vice signalling to draw attention by appearing as some fresh alternative.

I'm not saying Yarvin is not fully steeped in white supremacy by now - I mean seriously how hard would it be to find a different word? Has he run out of words from all that prolix writing?

It just feels like a pretty ineffective and nonproductive angle of critique. It's what they expect and have already set up their individual and collective armor to deflect it (eg how "deplorables" played out).

The real problem is that authoritarian societies don't innovate. People felt this suffocation from the creeping bureaucratic authoritarianism, which is why they were tempted to buy into this autocratic garbage in the first place. But the failure modes of autocratic authoritarianism are so much worse. Never mind starting off with a demented moron at the helm, making even the initial trajectory point downwards.