The whole point of ChatGPT is that its not just showing you information from other sources, everything is "original". Its trying to tell you what it thinks you want to hear based on what it has "observed" in the wild. So it has probably heard the response "It holds its cards too close to its chest" and decided that is a response that would make sense. As iterations go on and it receives feedback, it should get a better idea of how these responses work and whether people like them or not, and it will get better. Even just a couple of years ago if you asked a chatbot to write you a poem, you might use one line out of ten, then ask it again, use another line, etc until you have collected enough responses that make sense or are good. ChatGPT, on the other hand, tends to yield responses that are good enough the first time and can piece together a cohesive poem, story, article, etc.