Chiang is very right in saying that the lesson of LLMs isn't that LLMs are conscious, but that there are broad areas of reasoning that apparently don't require consciousness.
Probably the main problem of people implying LLM consciousness is that they imply LLM have human-kind of consciousness. Judging only on "how they speak", generally, they insist on using the same word that labels human consciousness (exclusively), etc.
But there are so many instrinic differences that such claim is not feasible despite similar "talking abilities".
"AI does to us what American Cheese did to food" ~ Opus 23