Well, this is a thread speculating about the future decade, reflecting on a guy's insights who has a dubious track record, by intelligent people that are in the loop of current tech trends.
Specifically, between these "intelligent people [on Hacker News]" and a "guy [with] dubious insights", one of these groups has a couple of billion dollars invested in every single one of the topics in the document whereas the other... well, maybe Bill or Jeff or Satya or one of the others reads Hacker News, but I doubt it. :)