The examples that Matt points out are more examples of tech culture groupthink than a phenomenon that is unique to hacker news. That is, they are ideas that are

The examples that Matt points out are more examples of tech culture groupthink than a phenomenon that is unique to hacker news. That is, they are ideas that are widely and passionately agreed upon within the culture to the point that disagreeing with them makes you look like a curmudgeon. This happens in lots of cultures. It is not something unique to hackers, smart people, or Hacker News.