Better to post your stream of thought.
Using LLMs to turn stream of thoughts into prose is mostly just adding fluff and expanding the text to make it look more like thoughtful prose. What you get looks nice to the creator because they agree with what it's saying, but it wastes other reader's time as they have to dissect the extra LLM prose to get back to the author's stream of thought.
Just post what you're thinking, even if it's not elegant prose. Don't have an LLM wrap it in structures and cliches that disguise it as something else.