You're right, the word "ridiculous" may not be correct. Maybe elitist, insular and postpolitical (which the author clearly finds negative), but the article speaks better for itself than I can.
Still, there's plenty of negative impressions (LW is a "site written for aliens") that could be dispelled.
Cover title: “Power and paranoia in Silicon Valley”; article title: “Come with us if you want to live: Among the apocalyptic libertarians of Silicon Valley” (mirrors: 1, 2, 3), by Sam Frank; Harper’s Magazine, January 2015, pg26-36 (~8500 words). The beginning/ending are focused on Ethereum and Vitalik Buterin, so I'll excerpt the LW/MIRI/CFAR-focused middle:
Pointer thanks to /u/Vulture.