content: The point is to turn the social media platform into a pseudo-interactive platform. In reality it's a one way medium much like TV; to deliver paid content to its users. As long as the user promotes the paid content they're free to interact as much as they want. In other words FB doesn't want users' interactions to drown out the delivery of paid for content. So if FB bans what people want to talk about under the guise of "hate speech" then all that's left are the topics they don't want to talk about and therefore don't talk about. And so, the paid for content doesn't have to compete for the users' attention.