Hopefully it'd motivate attempts to figure out how to objectively define and measure consciousness, for starters.

It matters precisely in the context of the subject of this article. If you believe the models at some level gain consciousness, then it raises moral questions about how you treat them.

With humans we generally choose to accept that because we believe they are like us, they probably have inner life like us, but as you can see from e.g. the recent (and regular) articles on aphantasia, most people have really poor intuition even about the inner life of other humans, so we understand consciousness really poorly.

Even if we assume (without evidence) that LLMs for the foreseeable future will remain far away from human level consciousness, as it is we tend to consider it problematic to mistreat even the most unintelligent animals, and even mistreating insects is used as a stereotypical way of depicting serious lack of empathy.

Without dismissing the possibility out of hand, there's an escalating series of questions there of when or if they'll have as much (or little) sense of being as, say, a fly, a mouse, a house pet, and what moving up that ladder would mean.

To some it is very convenient then to assume blindly that LLMs are just "stochastic parrots" (a line that ironically gets endlessly parroted), or similar, and dismiss the question out of hand as an impossibility, even though we do not know.

I'll stress I don't go around assuming an LLM is like a human. But we also do not know whether there are flickers of consciousness there, and we do not know how to find out given that even for other humans, the best we know is to measure their response to tests that are "only" telling us how they react.

If we can't find a better measure, there will be a point where we have to wonder if it matters, or whether the ability to act-as-if is all there is.

But to start with maybe we should at least be careful about making firm claims about knowing.