I could make the same argument for every form of entertainment. Sure, we should all be hunter gatherers and only have sex to procreate. It's not realistic.
I think what he says is we should be perfect users of our time, leading to some certain goal. Kind of like what AI could potentially be. So I think maybe we transition progressively from humans to AI to reach that perfectness. I'm sure it's possible to have AI that doesn't fall victim to those vices.