I read the article, but I disagree. People are angry, and that's completely understandable. I believe it's a justifiable response to the huge upheaval happening. But being angry about LLMs does not magically transmute their output into "plagiarism".

It has always been possible to take someone's public work, put a twist on it, and then sell it as unique. (I'm not making a moral/ethical argument, only a legal one.) I have yet to see any evidence that LLMs are fundamentally different from that approach.