When the word processor was first invented, people didn't end up printing less because of how easy it was to edit and view documents live — they printed more because of how little friction there was (compared to a typewriter) between making a change and pressing print.

I think we're going to see the same thing with document creation. Could LLMs help make a small number of high quality documents? Yes, with some coaching and planning from the user. But instead people will use them to quickly create a crappy document, get feedback that it's crappy, and then immediately create an only slightly less crappy doc.