I'm not sure about your linkage of memory to consciousness either, buy even if we grant it, the world is a very stateful place, there are plenty of systems lying around that might be supporting memory faculties which we fail to recognize as such because we're too different from it. Is the movement of electrical energy in the brain really so different than the ping pongging of neutrons in a stellar core? I mean obviously it is but, when it comes to the ability to store, transmit, and process information, maybe not.
I'm not trying to convince anyone that the sun has thoughts. My point is just that it's knowably unknowable. People are free to chose to believe whatever they want to believe about consciousness and they'll never be proven wrong. If we want to have useful conversations about AI, we need to develop ways of talking about the consequences of our actions which do not require us to first agree on the nature of consciousness.