Notice the weasel word “might”, as I know that it is a can worms. It is, however, a loophole that an ID advocate MUST close if they are to make use of the Conservation of Information Law, as Dembski does. So your cautions here are bolstering my point.
I agree. Yet this is precisely where Dembski is philosophically resting the claim that intelligence is a unique source of CSI. In his works, this traces back to substance dualism. Minds are not subject to the laws of physics, and exist outside of them, but they affect the physical world. That effect Dembski is equating with injecting information into the physical world, analogous to God’s ability to inject information.
If the world really is reversibly deterministic, and minds exist outside the physical world, then this might be true. However, it still does not mean they can measure this information in any meaningful or useful way.
I’ll just add that for a host of reasons, most of not all realistic simulations are not reversible in practice. While it might be a philosophical truth of the world, it does not actually interact with observations in experiments or simulations.