Because 'quality' is a misnomer. LLM writing has quality in the same way that a press release from a big company has quality, or a professional contract written by a lawyer has quality. It is functional, generally typo-free and conforms to most standards but that doesn't mean it has flavor or spice to it.
Creative writing is the intent to convey feelings, thoughts, to create atmosphere. Here's a great example of the failure to do so here, in a way that even most terrible writers would avoid.
> “It just said harvest,” she told Tom. She was sitting in one of the plastic chairs, holding a cup of the adequate coffee.
The coffee in this story is conveyed as being 'perfectly adequate'. But how do you convey adequacy? When you simply just say 'the coffee is adequate' there's nothing there. It could be conveyed by establishing that the coffee is always perfectly room temperature, or with the mere hint of bitterness and sweetness, or that it tastes like every other brand out there. In many respects this story is the exact same as the 'perfectly adequate' coffee: functional, unexciting and ultimately flavorless.
I took that phrase differently. The story makes the point that the AIs fail when metrics of quality can't be expressed in words. The use of a bare "adequate" reinforces the opacity of the coffee's quality. Certainly it would have worked well to use more words to convey specifics of the "adequacy" as you mention, but IMO that would have undercut the link back to the theme of human ineffability.
Obviously everyone's mileage may vary, but I didn't see this as a huge defect, and actually felt it worked pretty well.
Well-put.
This "flavorlessness" is all over the story, and paired with the obviously genAI images is how I realized as I read that this was either generated or at the least deeply driven by AI.
It constantly described facial expressions, tones of voice, and other emotional cues in generic, dry terms that communicated nothing but the abstract notion of "this person felt a particular way about what happened and it's up to you, the reader, to imagine what that feeling was."
It felt very much like it was prompted to "show, don't tell," by someone who has no idea what that phrase actually means.
As a professional programmer with a deep background in literature and music, this is yet another example that if you aren't an expert in a field, you will get mediocre results at best from an LLM, while being deceived into thinking they're great.