Intriguing idea. I actually did write a memoir when a doctor convinced me that I was dying (quickly) many years ago. I decided that before I left this world I wanted to leave a trail behind of how I had transformed a suicidal childhood into a genuinely happy adulthood. Of course I didn't die, but the book is still out in the world.
I think if an AI told my story, the information it could access would tell a tale of accomplishment. It would all be about the things I've created in the world. It wouldn't at all reveal who I really am. Oddly, it would match how most people see me (assuming they haven't read my book).
I don't think it would reveal precisely anything but, it would likely show things that we wouldn't think of showing ourselves so that as a complement and combined with our own knowledge of analogue experience would be an interesting addition to our journey of understanding.
I guess it could provide an interesting sort of psychotherapeutic snapshot, hahaha.
How many people would be cussing out the AI afterward, LOL.