Deep learning randomly recombines its input (e.g., text OpenAI found crawling Reddit and Stack Overflow) based on how frequently various groups of words are used together in its input. So its output is not "information" in the ordinary sense, or if you like, the only information you can glean from it is a vague sense of how other people have used words before, in general.
As a result, its credible use cases are pretty slim. If you need large quantities of extremely banal text, ChatGPT is your man. If you want to learn something, look elsewhere.
Though I will mention the use case I'm exploring at the moment, with... moderate success: using it as a Spanish chat bot, since I really need to learn Spanish.