I've been watching old TV shows lately, the original CSI, all those 24 episode a season procedurals and so on.

Whatever we call 'AI coded' now has an awful lot in common with old TV screenplays where no word of dialogue was wasted. It's all the same style: punchy, plays on words, a bit of smart-ass in there.

I think that makes sense. The "ai prose" stuff is a result of post training where the labs force the model to sound a certain way. It makes sense that the general chat models are trained to sound similar to mass market media, revealed preferences show the average person likes that kind of language.