It makes me sad that the next time I enjoy a piece of writing, I'm going to have to wonder if it was "enhanced" or even written wholesale by ChatGPT. I don't feel the same with arithmetic at all.
My pet theory is that editors aren't as good as they used to be. Market pressure to publish faster and faster in a vain attempt to keep up with the internet means that fewer of them are given the time and support to get really skilled. Thus resulting in ham fisted edits that jar me out of reading flow, and thence to analysing why.
(This pressure operates the other way too. Many authors' works are pushed out the door when they should have had more editing. )
With a calculator this is a feature. We want computations to be the same after all. Everyone should be able to get the same results when they enter the same numbers in. But this homogeneity doesn't belong in writing.
I think it is worth pointing out that plenty of prose editors advised on words to remove from your sentences (IA Writer as an example) before LLMs were a thing. If they used one of these tools making suggestions, would they no longer be worth reading? What about the green squiggle of grammar errors before this?
I'm not too worried about "default GPT style" becoming common, though, because I think it's more likely to be used by the people who have no style beyond "what I see on TV and in my family." Raising the floor, basically.
Anyone who wants their writing to stand out will still have to differentiate themselves. To put it another way: you're gonna be able to recognize the lazy users pretty quickly cause they're gonna have "GPT voice."