1) HN is maybe one organism if you zoom out enough, but it consists of people with wildly different opinions, you'll have capitalists arguing with anarchists here, any post is bound to have both sides, no sides and every side, all on the same page 2) it's easier to complain about stuff, somehow. Not sure why, or if it's extra prominent on HN in particular, but people tend to start thinking "Why am I against this thing?" and then write their thoughts, rather than "Why do I like this thing?". Maybe it is more engagement to write something that can be challenged, and people like when others engage with them, so they start to implicitly learn to be that way.