The assumption you seem to be making is that moderation is perfect i.e. that a single moderator marking an answer as unhelpful means that it reflects some absol

The assumption you seem to be making is that moderation is perfect i.e. that a single moderator marking an answer as unhelpful means that it reflects some absolute, unified judgement of Quora and all other moderators. We all know that it's not how it works: there's a difference of opinions between moderators. Not all parents deny candy to their children and those that do have different quotas. So extrapolating from a single data point, like you did, is not really valid.