Second, though, I think you might be describing your own shock experience here. Not every thread starts with a shallow dismissal—some do, but actually most don't. (Moderation is a factor, because we downweight petty and indignant comments whenever we see them at the top of a thread.) My bet is that you're seeing these sometimes, and because they're shocking and unpleasant, they somehow expand into your experience of HN overall. That's a shock experience, because the things that strike us unpleasantly end up dominating our sense of the whole. I've written about this a lot, but in slightly different terms: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que.... Trying to figure these phenomena out is an ongoing process.
Second, though, I think you might be describing your own shock experience here. Not every thread starts with a shallow dismissal—some do, but actually most don't. (Moderation is a factor, because we downweight petty and indignant comments whenever we see them at the top of a thread.) My bet is that you're seeing these sometimes, and because they're shocking and unpleasant, they somehow expand into your experience of HN overall. That's a shock experience, because the things that strike us unpleasantly end up dominating our sense of the whole. I've written about this a lot, but in slightly different terms: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que.... Trying to figure these phenomena out is an ongoing process.