It cracks me up that you bring up the exoskeleton metaphor, because I'm pretty sure it originated from a 100% AI-generated essay that made it to the top of HN a while back. So I guess, AI is whispering things into our ears whether we notice or not.
That's a pretty mid-tier metaphor on my part, along with Iron Man + Jarvis, that I don't think I'd even want to claim credit for :)
I will claim the CNC analogy though - I sometimes feel like a modern machinist just walking between machines and listening for screaming metal.
Exoskeleton is such an obvious metaphor for AI (at least, one potential ways of using it) that surely no one, human or AI, could possibly claim credit for it.