Curation instead of moderation.
The worst thing about running a content hosting platform is moderation. You will fail at it, and that failure will hurt people. Even worse, you replace success with victory.
The first move is to let your users help, by giving them the power to moderate their own spaces. Of course, as every web forum (and subreddit) has proven, this isn't a perfect solution. Even the best moderation can never be enough. Moderated spaces become echo chambers that war with one another. That's because power will always be abused for rent seeking. In the case of moderation, that means moderators abusing their authority to monopolize engagement; and narrative converging into dualist team-speak.
So what if we eliminate the hierarchy? Instead of letting a moderator decide what content shouldn't be seen, let users collaboratively decide what content they want to see.
Every published interaction is an attestation. It can be the presence of content itself, or it can be something about content. That might be a category, a logical assertion, an opinion, whatever. By providing a subjective attestation about some content, we can empower users to use boundaries to find content that is interesting, and avoid content that is undesirable. Users could choose the curated lists they trust, and collaborate on consensus.
Objective truth does not exist. Everything written is subjected to a specific perspective. By using boundaries instead of rules, we can accommodate this reality as a first class feature of the system. Friends aren't journalists anyway, so the goal of interaction was never objectivity to begin with.
By reframing interaction this way, we can have conversations instead of debates; and even if you do want to debate, you can leverage attestations to actually argue constructively.