Non-native speakers who are fluent in English do generally have good grammar, yes, but not everyone who writes in English is fluent (especially in technical writing). ChatGPT may indeed be overkill but other LLM tools like Grammerly are not.
I’m both a forever DM and an AI engineer at a small tech company (we make CAD tools for electrical engineering companies).
The term “AI” is rather broad and is more of a process than a thing. We should be more specific about what applications of AI we oppose/support. Here’s some things I’ve use...