Perhaps it's my impression, but I've rarely seen anything constructive recently. Almost everything in this discussion, for example, is reaction and sniping ("useless", "absurd", "stupid", etc.). It's a way to hang out and socialize online; there's nothing wrong with it. But personally, I've read enough Internet sniping for a lifetime; it's not thoughtful, informative, insightful or constructive; I don't learn anything and leave uninspired.
Perhaps it's just my impression or it's temporary; perhaps it's a bigger change (related to YC and its leadership distancing themselves from HN?). Is there anywhere online where the sniping is eliminated and the discussion more valuable?
EDIT: Sorry, I know it's off-topic, but there's no other place to post it (that I know of).