Moderation is really hard. And it's especially hard because a lot of people have very para-social relationships between themselves and rando's they talk to online.
Whilst I know that sometimes those rando's turn into real friends in the real world. For the most part people are strangers, and the better form of moderation is getting off social media for a while.
If meta wanted to do something amazing. It'd enforce one reality tunnel on the networks. Rather than have a base set of rules. Have a base set of news and facts that everyone shares in. Bubbles are generally bad. And everything goes to shit, even on HN, when we start getting into politics.