I think you would need to limit the scope from an entire decentralized , anonymous 'network' to just a decentralized anonymous website or discussion forum.. So

I think you would need to limit the scope from an entire decentralized , anonymous 'network' to just a decentralized anonymous website or discussion forum.. Something like an anonymous decentralized HN or reddit with mods that have the ability to ban posts, topics , & users. It wouldn't be as 'free' as tor or freenet, but with the right group of benevolent dictators it could be as free and useful for a certain niche topic like politics or news.