It was a ridiculous example to show that you can have a curated discussion forum that doesn't lead to an echo chamber. I took it to an absurd length to make it

It was a ridiculous example to show that you can have a curated discussion forum that doesn't lead to an echo chamber. I took it to an absurd length to make it quite obvious that it was what it was and chose a topic light enough so that there's no need to actually debate the merit of the issue raised by the example. Basically whether or not Jet Grind Radio is the best Dreamcast game is a dumb point to argue, but we can agree that a forum that enforced that opinion would just create an echo chamber of people who really like that game. And that that's bad curation. Essentially, agreeing with the guy I responded to that an echo chamber requires silencing dissenting opinions without any hope of discussion. I wasn't passing judgment on whether or not HackerNews is or is not an echo chamber.