On Reddit there's only a single-contrarian dynamic, where the contrarian post remains at the top, and is less liable to be questioned than the original article. Sometimes the top-voted, contrarian post has evidently not actually read the article.
Of course in older days of forums there was an infinite-contrarian dynamic, where the arguing back and forth continued forever.
Any assumption that a site frequented by people around the globe should be euphoric about a US manufacturing plant seems flawed.
I don't intend this comment to argue with them or with the assessment, but I've lurked on HN long enough to see the growing tide of early onset pearl clutchers who hit a quiet thread with a trite "Well I've never!" moral righteousness, then enjoying waves and waves of adulation while the target of their disdain are pummeled. What is the dynamic behind that? Shouldn't it have a name, because it is a negative, increasingly common tactic that sidetracks many threads.
The only step I know that seems viable is the long, slow process of community education. Technical solutions don't really seem like they would help. I suppose we could put up a nag screen when there aren't many comments in a thread, asking people to check whether they're posting from the right place...but we've always tried to avoid that kind of thing, and even if each such step made sense individually they would soon compound into something annoying.
Fortunately, not everyone needs to understand these things, just enough to start feeding back into the system and affecting the culture.
Edit: of course, since comments are all public data, anyone who wanted to could work on such a model, and if anyone came up with one that was good enough, that would be significant work and I would very much like to know!
If you'd like a hand, please email me. I figure you have access to my hidden email address.
I think HN is suffering from its own success with a notable drop is comment / post quality.
The first rule of HN is you don't talk about HN. ... also, if you've found a new forum, please let me know!
https://news.ycombinator.com/newswelcome.html.
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
I don't think this particular issue is related to new younger audiences, because—by inspection at least—the initial wave of objections isn't noticeably coming from newer users. I haven't specifically analyzed that though.
Complaints about "notable" drops in quality go back all the way to the beginning of HN. Of course it's possible that they're all true, but that would be a lot of notable drops. Or maybe some are true and some aren't, in which case we're fluctuating within a range... or maybe they didn't use to be true but now they are true? That's of course what the person perceiving the "notable drop" always feels—but there are also other explanations for this feeling, such as sample bias and nostalgia bias (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...). It's pretty hard to establish anything objective about it. If I randomly look at past frontpages and past comments, they don't seem consistently better or worse (but see the previous sentence).
You're not wrong about the thread, or rather the initial time sequence of the thread—but it's important to understand that that is not representative of the community. It is only the self-selected first-to-comment. Unfortunately the comments with the fastest TTP (time to post) tend to be produced by reflexive reactions, and—also unfortunately—most reflexive reactions are negative ones.