If the former, how do you use it to do that, and what are the limitations?
However, if you ask for quotes with citations, I think it just makes the shit up. Careful with dealing with a non truthful oracle. But, with critical thinking, playfulness and a strong handle on the intellectual material, it can be a great writing assistant!
The interesting/fun bit is creating the insight. Like 5 bullet points. Then you need a good anecdote to drive the point home. Another 5 bullet points.
Expanding those 10 bullet points into prose is the boring part. GPT3 could do that and create a vomit draft for you. Then you can polish the draft into good prose, which again is the fun part.
A well designed system could discourage and flag potential plagiarism in the generated content.