I think the idea of LLMs being sentient is just another version of the idea that the human brain is separate from the "mind." There simply is no "there" there. The brain and its computer wannabes are just machinery. There us no "mind" The "mind" is what the brain does.
whenever i see a take about LLMs being sentient, it makes me think of when my dog hears someone talking to me on the phone and seemingly gets worried i'm trapped inside the little rectangle