In the introductory section: "No trawling through hundreds of pages of chat logs, just a few well-crafted questions, and your deepest secrets are revealed."
it's just far easier to ask ChatGPT "hey have I ever mentioned cheating on my partner", with a fun extra risk of ChatGPT making something up that's worse than anything you actually wrote. So it 1) makes finding true positives a lot easier and 2) can invent false positives very easily also
That takes more effort. If you have someone’s phone for 2 minutes while they are in the washroom or whatever, going through texts is harder than just asking chatGPT