Which is why I think AI assisted writing is better then just letting it write the full text (if you care about the quality of the result). The act of writing isn't just the production of text, it is about wrangling a topic, rotating it in your mind and finding the perfect expression for a thought you have and that you want to convey to others. Some of those things can't be known by the LLM since you don't know them yourself by the point you started out.

Often that thinking bit itself provides value to the person doing it, beyond the text itself. By letting a LLM do it for you, you rob yourself of the change of thought and the new findings you may encounter.

Working with LLMs just makes it quicker to get going, bit you need to be a ruthless editor.