ChatGPT will happily write you a thinly disguised horoscope: https://simonwillison.net/2024/Oct/15/chatgpt-horoscopes/
I wrote about the currently circulating meme where ChatGPT appears to provide deep insights into your personality if you ask it "From all of our interactions what is one thing that you can tell me about myself that I may not know about myself" - when actually all it's doing is spinning up a pseudo-horoscope for you based on short notes it added to its "memory"