Your contrast is an either or, that - in the real world - does not exist.
Take content written by AI, prompted by a human. A lot of it is slop and crap. And there will be more slop and crap with AI than before. But that was the case, when the medium changed from hand writen to printed books. And when paper and printing became cheap, we had slop like those 10 Cent Western or Romance novellas.
We also still had Goethe, still had Kleist, still had Grass (sorry, very German centric here).
We also have Inception vs. the latest sequel of any Marvel franchise.
I have seen AI writen, but human prompted short stories, that made people well up and find ideas presented in a light not seen before. And I have seen AI generated stories that one wants to purge from my brain.
It isn't the tool - it is the one yielding it.
Question: Did photoshop kill photography? Because honestly, this AI discussion to me sounds very much like the discussion back then.
I think there are just a class of people know that think that you cannot get 'macbook' quality with a LLM. I don't know why I try to convince them, it's not in my benefit.
It killed an aspect of it. The film processing in the darkroom. Even before digital cameras were ubiquitous it was standard to get a scan before doing any processing digitally. Chemical processing was reduced the minimum necessary.
Yes, some things are better when manufactured in highly automated ways (like computer chips), but their design has been thoroughly tested and before shipping the chips themselves go through lots of checks to make sure they are correct. LLM code is almost never treated that way today.