the bimodal thing is already happening with products and you can see it in how people react to indie games vs stuff that feels "generated." even when the quality is comparable, there's a different emotional response when you can tell a specific human made specific choices.

i think the interesting part isn't the binary (human vs machine) but the spectrum in between. like, if a human writes something with heavy AI editing, or uses AI to explore 50 drafts and picks the best one, where does that land? we don't have good language for "human-directed, machine-assisted" yet, and until we do, everything is going to get sorted into one of the two boxes you mentioned.