We're talking about two different things. I agree that what you've said exists, but it's not what I was referring to. I probably muddled my intent by mentioning moderation. Automated, network-level tweaks are more interesting to me, because they scale. And because I believe they're just as or more effective.

F.ex Facebook de-weighting sharing of articles that a user hasn't read. HN allowing user flagging. Whether a website uses an "angry clickbait sidebar". Etc.