Ton warns that Mac. users will likely see a degraded experience due to Apple not being supported of FOSS, as well as the huge overhead of creating and maintaining yet another graphics backend if the long-term goal leads to Vulkan (as Apple phases out OpenGL on their machines).
Ton also is of the opinion that Apple is actually trying to make it more difficult for the Mac. to even have FOSS options for its users as evidenced by this final thought.
Last thing for everyone to know: Apple took back our Mac Pro dev system loan last summer. My contacts within Apple can’t manage to get approval for sending us another system. Blender Foundation has to pay for the Apple developer program (to sign binaries).
Apple is clearly not interested in supporting open source or cross platform openness in any way. If they would, they’d work with the industry on getting decent Vulkan support for their systems. If they were, they would give open source coders access to updated hardware.
This could change though if Apple decides to have a Vulkan implementation based on Metal, which Ton has hope for.
That said, I recently got an iPad for mobile gaming and in my opinion, that’s the one area where Apple has a serious advantage over the competition thanks to iOS and their high-powered CPU designs. FOSS is not as critical in that area when the apps. top out at just 10 bucks at most.