- If it isn't wireless, and if it isn't functional standalone, then the only option would be a tethered headset.
That already exists, get yourself a Vive or even get yourself a Quest 3 and then use the USB tethering mode (Virtual Desktop just shipped this feature, though many of us suitor argue it's inferior to a healthy WiFi 6 tether).
You, as a consumer, are well served by the existing slate of available products across the past decade..
- I'm relieved to hear that you won't be buying it, that means that when I can queue for a pre-order that's one unit I'm closer to bringing home. This is a luxury item in a season of brutal Supply constraints, and I will be fortunate to be able to invest in my amusement, like this.
... For what it's worth, ARM SOC's are growing wildly powerful and I will benefit from being able to play local stuff even without tying back to my beefier PC for fullfat experiences.
I already do this when I play steam games , including 3D titles, on a handheld AYN Thor.