>The model clearly has an understanding of the 3D structure of objects.

And the submarine clearly can swim! :D

The model encompasses 3D information, but a model is not a thinking entity able to understand anything. Well, it might be argued that saying that the "model understands" is a metaphor, and used as such OK, fine. But that’s it. Analogies rarely scale well.

As for humans, have you ever heard of proprioception? If that is not "native 3D sensors", I have no idea of what a 3D sense might be.