For most of human history people lived under the social systems these people are advocating. Enlightenment civilization, of which democracy and free markets are only two components, is less than 400 years old, and in that time we've seen a flowering of technological and cultural growth that dwarfs everything else that happened in the previous millennia of human civilization. Coincidence? Perhaps. But I think it more likely the neo-reactionaries are analogous to the cranks who write papers claiming to disprove quantum physics and then post them to the world using tools which depend upon those physics to function.
Science fiction author and Enlightenment champion David Brin has a blog post exploring some disadvantages of neo-feudalism. In that article he links to the Anti-reactionary FAQ with detailed criticisms of their arguments and goals.
Okay, I admit, I RTFA, and the crater in question has been dated as millions of years old, long before *anyone* claims humans capable of cultural transmission visited Australia.
According to the article, the author himself thinks that the aboriginal Australians were sophisticated enough to recognize impact craters on the landscape, and what might have caused them, and concoct legends about falling objects to explain them.
With all due respect to the parent post, the Indigenous Australians may have great knowledge that has been dismissed by their Western colonizers, but this is not evidence of such.
"What the scientists have in their briefcases is terrifying." -- Nikita Khrushchev