No, it doesn't. It happens because HN shadowbans people who have the wrong opinions. dang and whoever else would say that's not true, but it's tough to debate, because the evidence is conveniently hidden by being unjustly flagged. It's tough to point to a comment and argue that every statement in it is indisputably true, relevant, and polite, when it's been hidden from everyone by some anonymous user without explanation or justification.

This kind echo chamber maintenance goes on day after day, while HN delusionally prides itself on curiosity, civility, etc.