I think the disconnect between your point of view and mine is that I see "training an LLM on copyrighted text" the same as a person reading copyrighted text, which is perfectly legal. And I see violating copyright as a person or LLM reproducing copyrighted work (illegal). But using other works as inspiration for something novel shouldn't be considered illegal, whether a person or LLM produced the work. I would even be fine with literature being treated more like music, where reproducing the essence of a piece of work (i.e. doesn't have to be a word for word reproduction) is considered a violation. But if the LLM creates something completely new, how is that a derivative work / infringement?