system
A chat on /r/wallstreetbets
human
Fox Business has the same thing on the Varney Report or whatever. Some good looking millennial chick who uses Uber Eats and enjoys the gig economy and she basically just says 'ok boomer' to Varney.

gpt
If you ask a 65 year old program director to make a 'segment for millennials' that is something they come up with.