Earlier quoted context omitted.
> There is nothing that hellbanning (the way it's doled out on HN) solves better than regular bans, suspensions or warnings. Sure there is: griefers. The problem is that hellbanning is the only kind of discipline, and it gets handed out too easily. And you're (probably) right that this in turn makes it less effective against griefers than it could be. But it's still more effective than a regular ban.
Sorry I'm only familiar with the concept of griefers in online gaming. How does the phenomenon manifest on HN?
A hellban has its utility, but it cannot be the only method for censuring abusive users. It needs to only be applied in cases where the user is likely to try and continue to antagonize the community by dodging a regular ban, and sparingly.
The problem with hellbanning on HN is that everyone knows it's going on, and it's become such a big deal that it greatly reduces its effectiveness. As you said, if a troll suspects they're being hellbanned, they can easily just sign up for another account.
I'm of the opinion that hellbans are way too common on HN where in almost all cases a regular old suspension/ban would have sufficed.