I think the real ethical concern here should be that people can be idly fooled into thinking good chat bots are sentient. Like this guy isn't the only person in the world who would fall for LaMDA's parlor tricks. He's just the one who got to spend hours talking to it every day. If you set up every American with a copy, I bet a non-trivial portion of society would come to the same conclusion. People are naturally pred…
Suppose a child was raised by a more advanced version of large scale language model, with the ability to detect and act on its environment, as well as form memories. Further suppose that this child develops a deep emotional connection with the AI. Do you think that child would find your argument convincing that the AI is "not really a person"?
When you blithely add the requirements "ability to detect and act on its environment" and "form new memories", I think it's important to note that these are some tough functions to add.
Lastly, children form emotional attachments to a lot of things: parents, pets, toys, stuffed animals, blankets. They do pretty well discerning between the real and imaginary.