Even when LLMs add something it's a better idea to let the readers use LLMs to augment content. They have the best knowledge of their own background and what they're looking for.

Sharing information that is already in the corpus is simply not that valuable in a world where everyone has access to their own LLMs.

I'm in the "post both and let your readers figure out which, if any, they prefer" camp but even if you didn't (and unless you were using one of those super special models that can't be released according to the companies) I would hope that any literate adult that thought it valuable would be capable of consulting something with comparable knowledge and experience.

Of course, given that posting one is not mutually exclusive with posting the other, I would still think that posting both is the easiest way to satisfy both people who prefer to read the prompt and those who prefer the read the output.