

Some (probably bacteria-like) form of life appeared almost as soon as conditions made it possible, so it’s conceivable that it arose multiple times in earth’s history. But eucaryotes (animals, plants, and fungi) took almost half the lifetime of the earth to appear, and have a lot of contingent features, so it’s overwhelmingly likely that all eucaryotes have a common ancestor.
Sounds like not so much a case of ChatGPT trying to avoid being shut down, as ChatGPT recognizing that agents in general are self-preserving. Which seems like a general principle that anything with an accurate world model would be aware of.