Risks of letting LLM's rewrite freely (compiled)
1. "mediocre-to-risky at preserving a distinctive authorial voice."
2. it can “smooth out” your idiosyncrasies
3. it may homogenize rhythm and phrasing
4. it can drift toward generic high-fluency language (what people call “AI-sounding”)
5. Even when it’s technically better, it can feel like the personality got sanded down.
6. Highest risk that parts of the manuscript will feel “AI-smoothed” — slightly flatter rhythm, more uniform sentence length, subtle loss of personality.
7. Even the best current models have a detectable “house style” when allowed to rewrite freely. They default to clarity, efficiency, and modern commercial prose. If your natural voice is raw, quirky, literary, minimalist, ornate, or unconventional, heavy LLM rewriting will usually dilute it.
8. If you give an LLM permission to "fix it all," its default setting is to smooth out everything. It will eliminate fragments, normalize sentence lengths, clean up slang, and iron out the rhythms. In doing so, it will completely kill the distinct, immediate, and direct voice you have going...would get scrubbed for proper grammar, and suddenly the text loses its soul and sounds like a generic corporate blog post.