"Condensed Moldbuggery" is a very poor overview of Moldbug's ideas, and I would say that it deeply mischaracterizes many of them. Moldbug never said "progressivism always wins in the long run", or that "progressives are dangerous and creepy maniacs", or that progressives "try to bring down the military through proxy wars". As far as I can tell, this is all nonsense that comes from the conservative blog post author biasing his account of Moldbug's views in his own desired political direction.
"An open letter to progressives" is not the best place to start with Moldbug. It's unusually circumlocutory, even by MM's standards, and contains a large helping of off-topic rambling. I recommend "A formalist manifesto" for a clearer and less hyperventilated introduction to his views.
Are you sure? I'm guessing you've read all of his output. Those statements seem to match my memories of his material.
I've seen several people on Less Wrong recommend Mencius Moldbug's writings, and I've been curious about how he became so popular here. He's certainly an interesting thinker, but he's rather obscure and doesn't have any obvious connection to Less Wrong, so I'm wondering where this overlap in readership came from.
[EDIT by E.Y.: The answer is that he's not popular here. The 2012 LW annual survey showed 2.5% (30 of 1195 responses) identified as 'reactionary' or 'Moldbuggian'. To the extent this is greater than population average, it seems sufficiently explained by Moldbug having commented on the early Overcoming Bias econblog before LW forked from it, bringing with some of his own pre-existing audience. I cannot remember running across anyone talking about Moldbug on LW, at all, besides this post, in the last year or so. Since this page has now risen to the first page of Google results for Mencius Moldbug due to LW's high pagerank, and on at least one occasion sloppy / agenda-promoting journalists such as Klint Finley have found it convenient to pretend to an alternate reality (where Moldbug is popular on LW and Hacker News due to speaking out for angry entitled Silicon Valley elites, or something), a correction in the post seems deserved. See also the Anti-Reactionary FAQ by Scott Alexander (aka Yvain, LW's second-highest-karma user). --EY]