decentralized social network just means users own their own data. it doesn't mean the UI that displays the aggregate social network feed cannot moderate the contents
So you're saying it can be centralized too, as long as TOS says users keep owning their data?
But even in decentralized model, you may think you 'own' you data (as in TOS), but surely it cannot just reside on computing resources you have full control over. Now if you lose your passwords/keys, who do you contact to take your content down, grant you access to it again? What is an arbitration process to decide that you're you, not some impostor?
I think the idea is that your identity is registered on the blockchain and the data physically resides in your encrypted storage, that is accessed via this identity. if you lose your keys you are ducked in the same way that you are ducked with crypto in general if you lose your keys. I am not sure exactly, but that's my understanding.