Granted, there are people who didn't notice the utility of the em dash until it became apparent in ChatGPT's responses, but aside from either device there is a certain vibe I'm starting to pick up from a lot of writing online that mirrors AI writing although you can't just call it that, especially if people enjoy it.

A kind of abstract solipsism that only resonates unless you consent to a platonic relationship with the author through their writing. About as close as you can get to reading something written with the aid of AI, I'd imagine.