Sorry I don't understand your criticism. Is it not allowed to discuss capitalism or socialism, it is automatically an "ideological battle"? That doesn't make sense imo.
If you have something genuinely new to say, that might be ok—but then an internet forum is not a good medium for that; you should write a book or a scholarly essay instead, and maybe link to it here.
Afaik a lot of stories repeat on HN, so the "newsworthiness" criterion seems a bit arbitrary. Also, shouldn't it make a difference if it is a top level thread? I wouldn't submit a story about "socialism starving millions of people".
I know, your "new" policies have been in place for a while, but I think you really kind of destroyed Hacker News. I don't understand why you worry about curbing discussions in deeply nested threads, as they would be easy to ignore by people who don't care. I don't think you worry about SEO or anything like that, so really, what is your incentive?
Also, there are lots of "boring" and repetitive threads on HN (like on global warming), I think you may actually single out "capitalism vs socialism" for ideological reasons. I don't believe you that nobody is curious about capitalism vs socialism anymore. On the contrary, the "battle" is more relevant than ever, with socialist having a real shot at the US elections. It is a question that affects most of us a lot more than most topics would.
We can't be passive about such effects. They can quickly develop into a vicious circle that destroys the site. HN will only survive as an interesting place for thoughtful people if it avoids that, so this is an existential issue and why I (we) moderate that way. I'm sad you think I've destroyed Hacker News, but would submit that if moderation doesn't evolve as a community grows, one ends up with the default dynamic of internet forums: decay followed by heat death. HN was actually started as an experiment in avoiding that dynamic [1], so in my view we're aligned with its original spirit when we do this. "Our hypothesis is that by making a conscious effort to resist decline, we can keep it from happening." [2]
You're right that the threads about global warming are almost as repetitive. The same logic applies to those.
Really though, if you want to make a case about the quality of the site, you shouldn't be posting things like https://news.ycombinator.com/item?id=20419652.
What would be a good comment on Socialism, in your opinion?
I know you have a policy against politics, or used to have it. It doesn't seem to be strictly enforced, though (see global warming, feminism and so on).
I know why you have your policies, but I am not convinced that they are optimal. Have you ever even tested them against alternatives?
I've been on HN since it was called Startup News. I actually almost hate it now, because of some of the policies. Sure, maybe you don't want people like me on the site. Your call. I know several oldtimers feel the same, though.
You have actually found some ways to make users hate you, which is an achievement in itself. For starters, how about a warning that you are beyond your posting limit BEFORE people spend time and effort to write comments?
And it feels very one sided now, so not as interesting as it used to be (is it really the quality of my comment, or just criticism of Socialism that is the issue?). Still, I keep coming back, admittedly. But grudgingly so.
Edit: looking through the policies again, I still don't see how my comment is supposed to break the rules: "Essentially there are two rules here: don't post or upvote crap links, and don't be rude or dumb in comment threads.". It's not a crap link, and it is not rude or dumb. Imo, of course. That the same argument has been made before can hardly be a deciding factor, because then you'd have to shut down the site right now.