But it's also possible to believe that certain government powers should be very limited while at the same time believing that individuals should strive not to be assholes to each other.
Information wants a banana.
This is a private board, we are guests here. Even boards dedicated to discussing free speech regularly regulate the speech on their board because they need to keep peace. It's a big Internet, and you can make your own space.
Second:
I don't know how the people who run HN have ever claimed to be special free-speech proponents. They probably think, like most Americans can be shamed into thinking, that the government shouldn't punish you for speech, but aside from that I'm not aware of them, say, calling out other message boards for regulating their content as "censorship."
Third:
Unfortunately, once a general-purpose journalism piece lists your information, that's usually where claims of "doxxing" end.
One thing that annoys me about HN though is that I read it primarily through Feedly, and content often gets pushed to HN's feed prior to deletion, so I end up with a lot of annoying dead links to HN in Feedly.