I disagree that the majority of it is anti-LLM ranting, there are several subtle points here that are grounded in realism. You should read on past the first bit if you're judging mainly from the initial (admittedly naive) first few paragraphs.

> You should read on past the first bit...

Not GP, but... the author said explicitly "if you believe X you should stop reading". So I did.

The X here is "that the human mind can be reduced to token regurgitation". I don't believe that exactly, and I don't believe that LLMs are conscious, but I do believe that what the human mind does when it "generates text" (i.e. writes essays, programs, etc) may not be all that different from what an LLM does. And that means that most of humans's creations are also the "plagiarism" in the same sense the author uses here, which makes his argument meaningless. You can't escape the philosophical discussion he says that he's not interested in if you want to talk about ethics.

Edit: I'd like to add that I believe that this also ties in to the heart of the philosophy of Open Source and Open Science... if we acknowledge that our creative output is 1% creative spark and 99% standing on the shoulders of Giants, then "openness" is a fundamental good, and "intellectual property" is at best a somewhat distasteful necessity that should be as limited as possible and at worst is outright theft, the real plagiarism.

I read the rest of it. It was intellectually lazy.