I say qualia and not consciousness because qualia are what I actually care about. Consciousness seems to often be defined in human-centric ways I do not like very much. But if I were a functionalist, which I am very much not, I could imagine making a similar argument
Anyways this stuff is interesting to think about, but less because of questions about LLM qualia and more because thinking about your objections helps you clarify your own metaphysical beliefs which is always fun if you're a loser like me
Of course, at that point you would basically arrive at panpsychism for matrix multiplication, with the speed determining the intensity of the qualia, which would be very weird. But maybe consistent. I/we/Gaia could imagine this