using AI isn't the same as plagiarism and as far as I can tell still falls into a grey zone--at least for now.
I'd argue chatbot verbal diarrhea is plagiarism
by definition. I've already seen claims against those companies for using data as input without permission (which is a copyright issue). They reproduce bits and pieces of other data without sharing the original source (which is a plagiarism issue).
I don't call it "AI", because I don't see how this is "intelligence". It reminds me of fuzzy logic a bit. If it would be intelligence, those companies wouldn't need a human CEO
