Questions about what is 'desirable' or 'good' for X only require (and only have) answers when there's some kind of information flow between the thinker and X.

Suppose that your hour of hard labor creates a separate spacetime - black hole in our universe, Big Bang in theirs type scenario. Does that count as an information flow between you and an inhabitant (X) of the new universe? I'd think it does, so you're still on the hook to answer Roko's question.