I've not seen evidence of it in any of my interactions with generative AI, which have pretty universally been bad. I feel like it has something to do with autonomous spontaneity. I recognize it in animals I can't communicate well with, but I found it lacking in the LLM that I tried to play a TTRPG with. It would be easier for me to be convinced, if I really had a better understanding of what thought is. It's hard for me to be convinced because while I understand LLMs and diffusion networks better than most people*, I don't think I understand thought so I recognize the gap.

Also I'm not sure I agree with your final assertion, the stoner buddy is plenty wrong, but there is a coherency there. When coherency disappears entirely from human thought that's usually a seizure or stroke. Even as confusing as they are dreams and acid trips often have a coherency while you are in them, if not one that's easily described when recalling the experience.

*: My formal AI training ended before big data met ML, so it's woefully out of date. I am quite the computer geek tho, it's just my passion tends toward languages, type systems, and proof assistants. So, better than most, but not an expert by any means.