It's not actually trustless, though. It's just less clear whom you're trusting.
With Bitcoin, the people you're trusting are miners, and they are highly incentivized to preserve the correct functioning of the system because they get paid in bitcoin and they want it to stay valuable.
With a federated social network blockchain, there'd have to be an incentive to preserve privacy greater than the incentive to do any other bad thing like manipulating elections.
With Bitcoin, the people you're trusting are miners, and they are highly incentivized to preserve the correct functioning of the system because they get paid in bitcoin and they want it to stay valuable.
With a federated social network blockchain, there'd have to be an incentive to preserve privacy greater than the incentive to do any other bad thing like manipulating elections.