There's actually quite a bit of folklore suggesting that knowing a person's (or creature's) name gifts you with a kind of power over them.
And like most folklore, there's a grain of truth to that. It's a lot harder to gossip about someone in a way where they'd gain a reputation if you don't know their name.
People who do shady things don't come up with aliases because it's fun. In the same way, I doubt as many people would donate large sums of money to hospitals, universities, and other institutions if they didn't get buildings named after them in return.
Surely you can come up with a better example than that. Anyone who thinks HN is somehow related to criminal activity could be corrected by merely viewing the site once (or any number of third-party articles written about the site).
Meanwhile you had your full CV linked on your pseudonymous website, Streisanded yourself, and are disparaging the HN community repeatedly in your comments.
Depends when they visit. I can see someone uninformed arriving on the days of heartbleed, meltdown, defcon, CCC, the equifax hack, etc., and incorrectly drawing the conclusion that is for the criminal kind of hacking.
These threads show how little the US values privacy, but it does not necessarily apply to other countries.