What I realized is that Vision Pro is unlike many other Apple products simply because of its shape and form.
For iPod, iPhone, iPad and Apple Watch, they've all had roughly the same shape and form from the beginning. Just slight adjustments like weight and size, corners etc. but if you put the oldest and latest side by side, you'd recognize them.
Whereas Vision Pro if it were to succeed needs to change its shape radically. It's a lot like early Mac in this regard as well.