I see people do this all the time and their posts stay visible. What is different about your behavior that gives you a different experience?
My view is that there should always be places that are censorship-free, and after that it's okay that other places might be censored. Most participating on HN tend to know that engaging in certain ways (eg. excessive swearing, aggressiveness, etc.) will lead to being censored. As long as there remains other places to engage with people without rules, I'm also grateful for venues that are heavily moderated.
My profile has long been crapping on about censorship here, and when the topic comes up in an HN article, I usually wade in with a "not happy", but I just don't see what you're seeing.
But, that's what moderation looks like, generally. Every social structure is moderated in some form.
Some people know they're hellbanned and post anyway.
The hellban lets that person still post and converse with people who actively seek him out, without the downsides of having tons of hate speech all over the front page of HN.
It's been said before and it'll be said again, schizophrenia is not a catch-all excuse for someone in a public forum.
Imagine you have a landscape of statements that could be made. Color some of it black for being unacceptable by your standards, color some of it white for being perfectly acceptable. No matter how you slice it, there's some grey frontier in between. Throw a dart for every statement made by, say, 10 people in a week. A gentle smattering of darts appears. Maybe only a handful of statements will even be close to that grey line, and none of them land on it. Now throw a dart for every statement made by ten million people in a year. The landscape is no longer visible under the mass of the darts. Now tell somebody they have to go on to the field and clear out precisely and exactly the statements that are "on the dark parts". It doesn't matter how you slice it... someone's gonna scream about how their message was removed.
And that metaphor implicitly includes the idea that we all agree on the colors. In reality, of course, we all wildly disagree, even if there are broad patterns within certain cultures that can be seen. [1]
The only two simple solutions to that problem, "allow everything" and "allow nothing" are respectively illegal (and at least arguably unethical), and pointless (what's a community that allows 0 communication internally? I suppose one of those crazy logic puzzles about hat colors and wardens shooting prisoners. But that's about it.).
This theory predicts that all communities at scale will have a set of people complaining about how it censors. This is more than just HN or Reddit, but anything, NYTimes, Usenet, a sufficiently large GitHub project, everything that doesn't literally allow everything. I'm not aware of any counter-example....
So, given that it's impossible to have a scaled community that doesn't have people accusing it of censorship, it doesn't seem all that interesting to abstractly accuse one of it. One would have to criticize it from a more specific point of view, like, is the stuff being removed significantly at odds with what the community it represents expects? Or is there perhaps an ethical standard that you'd like to specify that is more specific than merely "shouldn't 'censor'" that you'd like to discuss? That's a serious question, BTW; I am not merely defending HN as a status-quo defender. Of course, the ethical standard will itself be up for debate. So it goes.
[1]: Standard metaphor warning: Don't argue the metaphor. It's just a metaphor. Neither the landscape, the colors, nor the darts exist, so there's no way they could "really" have three colors or "really" be nasty fractals or "really" anything else. Argue about the point it's making.
https://popehat.com/2015/05/19/how-to-spot-and-critique-cens...
http://www.washingtonpost.com/news/volokh-conspiracy/wp/2015...
And to dang's credit, I follow his comments now and then and most of the times he criticizes people for their comments, they do seem to be obviously over the line.