There's a new batch of YC startups every 6 months. The startups were about the same quality a year ago. And yet after demo day a year ago the top comment on HN wasn't a content-free dismissal with 86 points. I know both HN and the startups very well, and what's changing here is HN, not the startups. The site has grown so much that the median user is significantly dumber and meaner than a year ago.
I've been thinking a lot over the last several months about how to deal with this. One of the solutions I'm considering is to get rid of points on comments, and that would have worked well here. Fnid2's comment, as he more or less admitted himself, was just a throwaway remark. But displaying points transformed it into a rallying cry leading a mob.