The author does not understand the term libertarian. Certainly Silicon Valley is chasing utopian dreams, but not necessarily libertarians. Thiel is a libertarian, but it's not obvious that Musk is. Musk doesn't seem to have a big opinion about fat or lean government (for instance). And some very prominent people in the Valley (starting with y combinator guys), are very far from libertarianism.

70s technology-inspired utopias are really interesting though.

Buckminster Fuller and Superstudio have been very influencial too