HN is a tiny monoculture community catering to a niche audience. Of course the discourse is okay, there's almost no disagreement.
On that note: If even HN can't do it, I think some of these topics can't be discussed online at all. Here you've got great moderation, a high SNR, and vanishingly few of the pathologies that infest most web fora. Almost everything else is a step down in quality.
They can be, just not in a any format where anyone can post, let's say, 10 paragraphs of whatever, and then hundreds of people can jam their 40 paragraph rebuttals and threats right underneath it. While convenient for many purposes, the formats where the interactions are this tight and integrated are not the only formats.
You need something more like a weblog-structured community, where people can post their lengthy thoughts at their leisure, and others can post their own rebuttals on their own weblogs, but I think it's actually important that there not be tight integration such that everyone is getting a phone notification every time someone posts some link to them.
I would agree that online platforms that stick everyone into one metaphorical mosh pit have certain topics that simply can't be discussed reasonably, but "metaphorical mosh pit" isn't the only option.
If we can respectfully disagree and see each other's point-of-views without ghosting each other, then we're dialoguin'. Otherwise, we're just talking past each other, seeking karma brownie points, or taking out our frustrations.. and then what point is there to participating if there isn't meaningful communication?
The political differences here are often stark. You also have a fair amount of Independents here which makes this place a bit more tolerable for me. I really can't stand left-wing or right-wing ideologues, much less the extremists.
HN caters to people from all across the US (most of the audience is outside Silicon Valley and the global audience continues to grow based on dangs postings).
You could say it's mostly male, but I've seen more usernames with women's names in them.
There is only one party in the United States, the Property Party, and it has two right wings: Republican and Democrat. Republicans are a bit stupider, more rigid, more doctrinaire in their laissez-faire capitalism than the Democrats, who are cuter, prettier, a bit more corrupt — until recently - and more willing than the Republicans to make small adjustments when the poor, the black, the anti-imperialists get out of hand. But, essentially, there is no difference between the two parties.
Our only political party has two right wings, one called Republican, the other Democratic. But Henry Adams figured all that out back in the 1890s. "We have a single system," he wrote, and "in that system the only question is the price at which the proletariat is to be bought and sold, the bread and circuses.
― Gore Vidal
Maybe it's me, but I don't think about participants' gender or if there's enough/too much of any particular attribute group. I infer your point is that HN extends well-beyond the stereotypical academic, software engineer, or tech entrepreneur: male, Caucasian/Asian/Indian subcontinental, high-income or college student, SF to Milpitas.
The rest of this is pretty spot on, and your assessment of my sentiment was spot on.
Property for me, not for thee...