Virtual Reality

The Apple device does support virtual screens, but it's not what they're focusing on

I think I disagree, I live in an apt that’s by no means luxurious. I’ve spent some time in VR and there’s just so long I’d be willing to spend in a fully virtual space. If you have dogs or people around you, you fully isolate yourself from them. If you want a cup of coffee or a glass of water the context switch could become a small inconvenience, etc for other small everyday stuff that VR hinders.

But I totally get what you’re saying and I’d love to have the option of both, but that kind of necessitates that AR tech advances as well as VR.

That depends on why you're using it, for displaying close range real world into that's exactly what you want but for prepackaged multimedia experiences (games and other stuff like remote interaction) it doesn't fit as cleanly, and he's probably only thinking about the latter.

Mixed reality is excellent for tracking inventory (including at home, finding where you left your stuff), checking the status of and controlling networked devices, navigation, physical coordination, visual guides (especially if they can map onto the objects in front of you), etc...