Eh.
Why would I give him the same credit I would give a writer.
Or why would I give a writer the same credit I would give someone who created the AI prompts and scaffolding to generate this?
Being unhappy about not being able to call oneself an author, ends up betraying a lack of confidence in the work or process.
In the end writer, dancer, actor, whatever - these titles come from their impact.
There will be a different name for this, and eventually there will be something made that is good enough that people will be spell bound. At which point its going to be named something else.
At which point.
Ironically, the story can be read as gesturing in that direction, as it's ostensibly about giving a new title to a particular job.
In general, though, I think part of the mistake people keep making is that they try to imitate what would be value to engage with if a human wrote it, in an attempt to claim the role of an author of a book or whatever. There's likely artforms that are unique to what an LLM can facilitate, but trying to imitate human artforms is going to give you stunted results. The AI is very good at imitating the form but not the substance.
Once we stop trying to generate and pass off AI essays, novels, choose your own adventure stories, and all the other human genres as being human writing, we'll have a chance to figure out actually interesting artistic forms.