[TuringTest]

No, these tools are not being used for producing documents (not directly at least).

But that's not their purpose; their primary role is as personal databases, where you can dump any factoid, TODO or interesting article that you know you'll want to process later, freeing your short-term memory and your mental burden. Having all your notes in a single searchable knowledge base allows it to grow organically and find patterns, so that you can do incremental iterative refinement of your intellectual activities.

Creatives using them are saying that it's way easier to compile ideas for writing and publishing articles or blogs entries when they are compiled and processed with these tools.