Do you know anything of physics at all? SCIENCE and PHYSICS tell us that, because of the Heisenberg uncertainty principle, we DON'T KNOW right now if we live in a causal deterministic world or not. Therefore you cannot scientifically state that there's no free will.
Yes, not scientifically, just philosophically. And I agree with him in that. But the fact that we live in a deterministic world (something that can never be proven right or wrong), doesn't mean that we don't have to pay attention to freedom when designing political/economic systems. The statement "there's no free will" is just not relevant to the conversation. My decisions depend on what I have lived in the past, but that doesn't mean someone else has the right to coerce me.
There's no rights. Agreed too. But there's no such thing as distorted values neither. There's not even "an optimal use of resources". There's just an optimal use of resources to attain certain goal.
Who is going to decide the goals of a RBE society?