I think I heard of people with brain damage who does not keep an internal state, they feel like they continuously wake up and only remember memories from before the brain damage. That would be a kind of parallel to consider, or at least somewhat analogous. I think most of us assume that such people would have phenomenal consciousness / subjective experience / qualia
I don't think that's a fair comparison. You can't put a biological system into 'read-only' mode like you can with a computer system (where this is the default since modification requires dedicated effort).
A biological system self-modifies even when just associating memories.
The phenomenon you describe is much more high level, we observe someone can't form new memories, but that doesn't mean their fundamental brain chemistry has changed.
