Just want to correct one thing: They're not AI evangelists. They're copyright survivors from the MPAA/RIAA wars (in the 90s and early 2000s).
Plagiarism requires near-perfect copying. If you summarize, paraphrase, or re-write something using different language, you're not plagiarizing anything.
Everyone has a right to summarize or paraphrase whatever TF they want. That includes Big AI companies and individuals using LLMs.
It is not worth giving up our rights just to placate a handful of very wealthy authors.