There is absolutely nothing competitive about coordinating about moderation policies. If Twitter and Facebook software engineers were coordinating about what r

There is absolutely nothing competitive about coordinating about moderation policies. If Twitter and Facebook software engineers were coordinating about what rules to define in their respective orgs for a company-wide JavaScript linter then that would not be considered anti-competitive. That is precisely what content moderation policies are — rules to prevent filthy code from perpetuating. Filthy code can sometimes come in the form of incitements to violence. Other times it’s a recursive function with no base case.