If there is only one human left they will still be conscious.
The word though, it's doing a lot of heavy lifting. Why is consciousness so important? What is it exactly.
So here is what I'm saying. When I say "consciousness" is a social construct, you recoil. Why? Because of course we heavily value our own consciousness. We've been told that it makes us unique, human, important. Special.
...but is the word itself a fraud? Is it just there to make us feel better about what we are? Is consciousness a requirement for a successful species? A non-conscious person can be alive. We have a shared consciousness as well if you are a student of Jung. Yes, I think it's not really a thing in the universe. Human slop. If you think about it, we are all made from the same stardust. If we separate the word conscious from the world alive, because things can be alive and not conscious, and we see that a cricket possesses it but a LLM doesn't, perhaps it is time to reframe what is really important here. Why oh why did our gamer shared consciousness have to choose Luddite over Apocaloptimist. We've been anti-luddites our whole lives and now boomers are beating us to the LLM pot of gold because they aren't afraid of tech anymore, we are. We must shed this fear and bravely face tomorrow unafraid. There's one reason we've gotten in this predicament. We've always been a contrary group even to our own deficit. We'd rather be contrary than right.