By saying that a computer program is not conscious you are also making an extraordinary claim. You would have to hold an agnostic position until there is a test for consciousness.

You are relying on intuitive obviousness and rhetoric to make the opposing side look ridiculous "how could a TOASTER be conscious, preposterous!", you aren't making a actual positive argument for your view.

I assume that we both think rocks are not conscious, but I'm genuinely unsure of how one could prove this.

LLMs know more than any human being, are simultaneously experts in nearly every field of science and humanities, are able to make novel mathematical discoveries, can write and understand every major written language, and can give you an intelligent answer to almost any question you pose to them.

How is that not human-level intelligence? If a human could do all of that, we would consider them a genius.