Will Meta Support OpenXR's Environment Blending Modes for Mixed Reality?

OK so the Vive XR Elite does mixed reality in Blender.  I also use other software, not built on Unity or UE - the Vive XR Elite does mixed reality on that too - both Blender and the other app are PC based - I can do them over cable or WiFi.

Speaking to some of the developers of these apps they believe it's because of what I said in the title of this thread.

I and others also have the question here: https://communityforums.atmeta.com/t5/OpenXR-Development/PC-VR-Passthrough-AirLink-OpenXR/td-p/1015758 which nobody seems to want to answer.

Please can we get some answers from a Meta developer?  Many thanks.