I don’t think there is an actual “shadowbanned” on Hacker News, I’ve just seen various stages of banned/flagged/dead users. I mean, I guess I wouldn’t know if there was, but I’ve never heard anyone mention it so…
That's what I thought too, that it was just regular banning. But 'dang says shadowban, and [1] implies he does mean the type where the user doesn't know.