The scariest dystopia I can imagine is one that seems inevitable: Neuralink-like device connected to AIs so that your thoughts become prompts, and the subsequent thoughts, ideas and mental images are indistinguisable from AI responses.

It's bad enough knowing that all "your" thoughts are downstream of everything you've ever perceived or interacted with - including the hypnotic sludge from overtly manipulative algorithms. The only thing worse is being unable to discern which thoughts are "yours" and which are API responses from MegaCorp's AI servers.