For creative and professional writing, I found them useful for grammar and syntax review, or finding words from a fuzzy description. For the structure, they ar

For creative and professional writing, I found them useful for grammar and syntax review, or finding words from a fuzzy description. For the structure, they are barely useful: Writing is about having such a clear understanding, that the meaning remains when reduced to words, so that others may grasp it. The LLM won't help much with that, as you say yourself.