This argument can be simplified as a nonalemma. You can promote or suppress content by centralized, decentralized, or null mechanisms. So nine combinations: No

This argument can be simplified as a nonalemma. You can promote or suppress content by centralized, decentralized, or null mechanisms. So nine combinations: No promotion, no suppression: chatter (the early Internet) Centralized promotion and centralized or no suppression: traditional media Centralized promotion, decentralized suppression: modern electoral politics, basically No promotion, any suppression: silence (obviously) Decentralized promotion, decentralized suppression: echo-chamber/hive-mind/hug-box, see also: why FB/Twitter don't have downvotes, and Reddit discourages them Decentralized promotion, no suppression: inflammatory content takes over Decentralized promotion, centralized suppression: the modern social media model But wait, there's a bonus: Decentralized promotion, semi-centralized (approved user) suppression: Hacker News