I've yet to see a convincing argument that humans are any different. They're sometimes better at pretending to understand things, but at the end of the day both humans and ChatGPT have a small handful of things which they functionally understand[0] and a larger body of knowledge which is only partially integrated.
Chomsky has disappeared up his own intestinal tract on this one. One can quibble about intelligence until the end of time, but the real question is that of utility -- which they certainly do have, in ever-increasing scope and measure.
[0]: i.e. have synthesized the object and can properly explain and apply it in other contexts