The other gimmicks like "big adjustable screen" are still... 2D screens in 3D space, and you still have to mount heavy goggles to your eyes to see. Monitors seem like a simpler way to have big screens. And the Vision Pro limits your Mac extended screen to only 1 external floating screen, for some reason.
If you're traveling, are you really going to carry around a Vision Pro with you, or are you just going to adjust your workflow to use a single screen on your laptop? Alternatively, you could just use a portable monitor for another screen. Those are very cheap and work pretty well.
The closed ecosystem also makes it difficult to be more productive. Fewer desktop apps. And a lot of iPad apps, in which case... why not just use an iPad?
If I'm buying a VR headset I'm buying it for gaming, in which case I'm looking elsewhere.
The Vision Pro seems like a consolation product because Apple couldn't get AR glasses to work. And it doesn't seem to do much of anything useful.
So who are the buyers here?