This implies that writing styles are simply "correct" or "incorrect". I'd prefer to read someone's natural writing style, even if they do not consider themselves a good writer, because it comes from them genuinely. Much better than enduring text that has been fed into an LLM and homogenized.
I'll push back and say it's the former. Good business writing is all about the editing, and autoregressive LLMs are terrible editors. They roll dice on every word and put the same tics on every text. They meander.
Suppose you check something with ChatGPT, get nine hundred words, edit that down to three or even one and send that. You won't get AI;DR for "I checked, we're good."