That is absurd.
Copyright law is designed to strike a balance between two issues. One the one hand, the creator’s personality that’s baked into the specific form of expression. And on the other hand, society’s interest in ideas being circulated, improved and combined for the common good.
OpenAI built on the shoulders of almost every person that wrote text on a website, authored a book, or shared a video online. Now others build on the shoulders of OpenAI. How should the former be legal but not the latter?
Can’t have it both ways, Sam.
(IAAL, for what it’s worth.)