That was submitted almost two decades ago. It would be interesting to know what pg thinks about this stuff today, but based on his recent writing I'd bet that he is not buying it.
(Also, submitting articles does not imply agreeing with them.)
Don't know about pg, but Yarvin was popular in silicon valley and investor circles. From what I know at least the people below are connected to Yarvin/Thiel and 'network states'. Likely more billionaires that hide it.
Thiel, Musk, Brian Armstrong, Marc Andressen, Ben Horowitz, David Sacks.
You can also use https://hn.algolia.com to find it.