Comment by dlcarrier
He's writing in the academic/upper-class style that it's training data focused on.
I'm convinced that one of the largest frictions to common use of LLMs is that it translates everyone's writing to the that same style. Having it punch-up or flesh-out your proposal or outline, or whatever, isn't really adding any new material, but it's translating it to a writing style that has historically been exclusive and difficult to learn, and that difference in style is what made the original text sub-par, from the perspective of academia and members the upper class.