Do you believe this relative quantity is commensurate with the quality and significance of his thought?
I'm not sure, although comparing him with the examples you site in your next paragraph certainly makes him seem much more worthy. Seriously, could you have found someone whose philosophy does not contradict basic economics?
I predict that if I started making multiple Discussion posts focused solely on the social criticism of Althusser or Deleuze or Zizek, I would face a very negative reaction from this community, even if I gussied it up with talk of "map vs. territory" and "Bayesian evidence". Yet for some reason the community seems far more tolerant of rampant Moldbuggery.
Could you site another example of a discussion post that's a link to Moldbug?
Seriously, could you have found someone whose philosophy does not contradict basic economics?
I think the comparison is fair. Both the Austrian and the Marxist economic traditions are pretty fringe and severely flawed. Moldbug has interesting and occasionally accurate things to say about politics despite his bad economics, but so do Althusser et al.
Could you site another example of a discussion post that's a link to Moldbug?
There are two of them linked in the comment by Konkvistador to which I was responding.
http://unqualified-reservations.blogspot.com/2013/01/noam-chomsky-killed-aaron-swartz.html
Summary: Moldbug on the Aaron Schwartz affair. Power is a very real thing with real consequences for activists, yet many people don't understand the nature of power in modern times. People like Noam Chomsky get great fame doing bad epistomology about who has power, and as a result do great harm to idealistic nerds who don't read between the lines to selectively target their attacks at weak institutions (Exxon, Pentagon) instead of strong ones (State, academica incl. MIT).
Here he returns to a theme that is one of his real contributions to blogospheric political thought: that victory in political competitions provides Bayesian information about who has power and who doesn't. If your worldview has the underdog somehow systematically beating the overdog, your epistemology is simply wrong - in the same way, and to the same extent, as a geocentrist who has to keep adding epicycles to account for anomalous observations.
This means that activists like King, Schwartz, and Assange are only effective in bullying the weak, not standing up to the strong (despite conventional narratives that misassign strengths to institutions). When such activists stop following the script, and naively use the same tactics to attack strong institutions, reality reasserts itself quite forcefully: