> LLMs, in my opinion, are on average better at writing copy than humans.
A disturbingly high proportion of US adults (at least in the US—I don't know how this looks in other countries) barely count as literate. Perhaps half[1]. Most of the rest aren't a ton better, and can't write worth a damn.
I think "on average" understates the case: at least 90% of US adults would probably get better results by passing their writing through ChatGPT, than not. Most of that remaining 10% would also see improvements from ChatGPT, except for writing they've put a great deal of effort into. It's very good at cleaning up writing, and/or tuning it to be better-suited to some purpose than the original was.
In fact, a large majority of readers in the US would probably benefit from passing what they read through ChatGPT and having it summarize it concisely, in very simple terms.
The world makes a lot more sense, to those who grew up taking to the written word as naturally as a duck to water, when we appreciate that the world runs on the written word, yet most people are terrible readers and worse writers.
[1] "According to a 2020 report by the U.S. Department of Education, 54% of adults in the United States have prose literacy below the 6th-grade level." And, nb, if you're a good reader and you're thinking "6th grade level, that's not so bad", your idea of what a "6th-grade level" looks like, is probably skewed way higher than what they mean.
https://en.wikipedia.org/wiki/Literacy_in_the_United_States