I don't understand how one even uses "AI to write". Writing is the act of taking something that's been burning in my head for a time and emitting it for others. The LLM doesn't know what's in my head and therefore cannot write it...
I'm not the world's best writer by any means, and rather self-critical in general, but even I don't have the compulsion to have an AI rework my thoughts for public consumption. Perhaps for a set of slides or a big README, but not for one-off ideas and communication. In fact, I quite resent when someone sends me some AI generated psuedo-thoughts that are clearly not their own and devoid of the real context.