I used Eagle Mode[1][2] for a number of years, and it was non-ironically the best file manager I've ever used. I only stopped because it required dozens of very out-of-date packages for its preview features.
But the point of whimsical demos is inspiration, like a concept car, not complete realism.
VisionOS uses old school UI like blocks and doesn't do anything new in terms of just reusing design paradigms from ipadOS/macOS. It makes sense why people would think of it just as a computer they strap to their face.
Half of their marketing was about how it's a essentially a macbook that you strap to your face...