The qualification "better" is doing some hefty lifting in your assumption.
What you think is better is not what I think is better. Imagination is not storytelling. You ask the "mean human" to write, it's going to be worse than an LLM in spelling and grammar, if you get anything at all.
Daydreaming is absolutely storytelling. The average person is able to craft elaborate stories on a whim. Writing is used, in part, for conveying stories, but writing is a separate skill. The good news is the average person can learn to write well, but LLMs, so far, have not demonstrated the ability to craft interesting stories and it’s pretty unlikely they’ll be able to learn, as this is an unverifiable domain.