Comment by ep103
tl;dr: AI is looking to convey words. A good author is looking to efficiently convey information.
Because that's literally what it is. Its an algorithm that is continuously asking itself, 'what is the most likely word I should say next?'
Whereas an author that is intending to communicate a point, will start with an idea, write a passage to explain the idea, and then edit their passage to the minimum number of words that most precisely, accurately, and succinctly communicates that idea.
I'll always love "If I had more time, I would have written you a shorter letter."