Like other commenters here, when I try to use them to help with my work, they don't. It's that simple. I have tried AI coding assistants, and they just guess incorrectly. If I know the answer, they generally give me the same answer. If I don't know the answer, they give me gibberish that ends up wasting time. I would love to look over the shoulder of an AI booster who had a really good interaction, because it's hard for me to believe they didn't just already know what they were looking for.