This is probably not going to happen anyway: I am more curious if we even have a viable alternative. If the network has user content, it will need a lot of money to hire people to moderate it. How can that be paid for without violating privacy (ads/selling data)? Or, alternatively, you make sure you store no user data. Or something else that I didn't think of which is why I was asking.

Block cha cha chá chain.

Maybe, but it would be better if the personal info is not stored outside the computers of the people who agreed to share it amongst eachother than, as far as I understand with blockchain, having it stored everywhere (decentralized) and immutable (forever); while that has it's place to prevent censorship, it is seems not to fit social networks.