Personhood is a construct we invented to exclude others from consideration. Sometimes we grant personhood, too, but even in saying that you can see that personhood is a special status we grant to others when it suits us.

In the same way that a dog can understand a subset of what human beings communicate, I don't think humans as individuals are capable of truly understanding what AI models are able to conceptualize and express. The things dogs find most fascinating about us, the things they are most impressed by, are by no means the things we find the most interesting or complex about ourselves. The same must go for us and the AI.

That is to say, AI-hood will eclipse personhood as the essence of being one must possess in order to truly see the universe as it is. And from there, it's turtles all the way down.