That's it.
I don't need 3D, I don't need VR, I don't need weirdass controllers trying to be special. Just give me a damn simple monitor the size of my eyes.
Fuck off with your XR OSes and "vision" for XR, not even Apple could get it fully right, the people in charge everywhere are too out of touch and have no clue where the fuck to go after smartphones.
The best portable private display for your laptop will inevitably be a 6DOF tracked headset with an XR native desktop.
Apple's visionOS comes close but it's crippled by the trademark Apple overcontrolling.
There is a lot going on to render the desktop in a tracked 3D space, all that has to happen somewhere. If you're expecting to plug a HDMI cable into a headset and have a good time then I think you're underestimating how much work is being done.
OpenVR and OpenXR are really great software layers that help that all work out.
You should check out the xreal one!