Current state of the native developer SDK?

I'm not clear on what the current state of the Oculus SDK is. I have read they switched over to OpenXR and discontinued the native SDK, but then I see documentation on a PC SDK here:
https://developer.oculus.com/documentation/native/pc/book-gsg/

My immediate goals:

• Oculus Rift support
• PC-powered Oculus Quest support (streaming from PC to the headset)

Later goals:

• Native Meta support (running on Android)

I've used Valve's OpenVR before with good results. I believe it supports the Rift, but I am not sure about the Quest. After working with it for a week, I have a very bad impression of OpenXR.

In order to meet the immediate goals stated above, where should my focus be?