> Unlike ours, the manufacturer’s M1 drivers are unfortunately not conformant for any standard graphics API, whether Vulkan or OpenGL or OpenGL ES.

Yes, it is conformant to a graphics API. It's called Metal¹. You might enjoy pretending that "the manufacturer" hasn't given a damn to provide a fully working and highly performant graphics API designed under the same roof alongside the people who designed the hardware, but this kind of petty dunking on Apple that seems to be so popular is not a good look.

1) https://en.wikipedia.org/wiki/Metal_(API)

Protip: Downvoting is not the same thing as refuting someone's argument with a cogent one of your own.