I see this argument everywhere and have yet to succeed in getting ChatGPT to give an article. This argument is basically a non-starter
https://mashable.com/article/chatgpt-revealed-personal-data-...
It may not be conclusive, but it's highly suggestive:
> Amount and substantiality of the portion used in relation to the copyrighted work as a whole: Under this factor, courts look at both the quantity and quality of the copyrighted material that was used. If the use includes a large portion of the copyrighted work, fair use is less likely to be found; if the use employs only a small amount of copyrighted material, fair use is more likely.