Yeah, I think long-term I'd want a "confluence mode" (a la Parallels) or a large curved screen. Dual/Tri-screens would be fine too but I feel like we can do better with an infinite canvas (though "monitors" might make macOS apps play nicer).
It's a far cry. This thing is a little more that 4k for the entire field of view.
Resolution required to render two 4k monitors at comfy distance is more than an order of magnitude away.
An important other aspect though is how much is visible. With foveated rendering does it matter if I have 50 4k monitors? As long as they aren't all in-focus and in-view at the same time?
I'm not sure where the limitation is right now (if it's purely a software limitation) but my MBP runs 4 monitors right now and I'd put up with a cord (or two) plugged from my MBP to my AVP if I could have all my monitors in VR. I believe they are using AirPlay to give you the virtual desktop but 3-4 AP streams doesn't seem too crazy, but I don't know much about that.
There's foveated rendering, but there isn't foveated physical resolution.
With this cutting edge display resolution you can expect a 1-2 monitors QHD of comfortable angular size and that's it.
You could have more out of view but that's your virtual displays.
Then again, why exactly? Getting used to some heavy steamy gadget on your head at home/at work so you can also do that on a train? Get real.
VR goggles always were a gimmick and will be a gimmick on coming decades. I'd bet we'll have non-visual brain datalink before we have non-gimmick VR.
I don't think you'll be able to pull windows out of the mac screen, but apps you might need are in vision OS anyway like safari or messages.
I think my dream would be dual 4k monitors, or maybe a double wide?