Mac, on the other hand... oh boy. It's pretty much a disaster. There is no end of bugs in Apple's graphics stack, and no, Metal doesn't solve them all. The first time I ran the Metal port of my library, my MacBook Pro instantly kernel panicked. I have never had that happen on Linux.
Besides, the driver is only a tiny portion of the whole tooling for any graphics, professional game engine minded developer.
I'm a professional graphics developer and I prefer the tooling on Linux to that of macOS.
Most professional graphics developer I know rather user better tooling than only bare bones graphics drivers and RenderDoc.
I guess that is the same point of view that gave us OpenGL and Vulkan without any kind of tooling beyond drawing framebuffers with hardware support.
I does appeal to some, but not the majority, otherwise Linux adoption would have moved beyond 1% by now.
Linux desktop market share, or lack thereof, has nothing to do with graphics tooling.
While anyone on Apple and Windows platforms can enjoy Metal Frameworks, DirectTK, Unreal, Unity, CryEngine, PIX, Poser3D, Photoshop, Houdini, Cinema 4D, AfterEffects,...
On Linux, I guess having the freedom to use half baked copies of them, or hunting for libraries that should come out of the box with any graphics stack like 3D math, mesh handling and loading materials, is more important.
I don't know them all, but FYI Unreal, Unity, CryEngine, PIX,Houdini, and Cinema 4D have native Linux versions.
I don't know about Metal Frameworks, DirectTK, Photoshop, and AfterEffects though, you might want to look into that.
In your first comment, when you said "Like being quite bad for graphics programming and game development", you were implicitly forming the larger sentence: "[Retaining] classic Unix sensibilities ... like being quite bad for graphics programming and game development."
And—since the topic of the thread was "OSes that are better because they avoid going down the road of RedHat-like 'modern' Unix sensibilities"—you were implicitly forming a larger assertion: "[OpenBSD, because it retains] classic Unix sensibilities [unlike RedHat] ... [is] quite bad for graphics programming and game development[, unlike RedHat, which is okay at those.]"
And so that's what people tried to argue with you about, which I hope makes people's rebuttals to your first comment make more sense to you.
But then, in your second comment, you went ahead and said that modern Linux is equally bad at doing these things. So clearly the expanded form of your assertion isn't what you meant.
So... what were you actually trying to argue?
I was arguing that only NeXT and SGI had a graphics workstation culture, where having UNIX underneath was more of a detail than anything else.
No one cared that much of writing POSIX daemon and CLI tooling, the whole point was making the best use of the GUI frameworks, IDEs and their GPUs.
Even when SGI offered IrisGL as the basis for OpenGL, they kept the best parts for them.
Either you're talking about high-end gaming, in which case Apple isn't in the game at all - the only players are Microsoft and Sony, though Google is making a bid now as well with Stadia.
Or you're talking about low-end gaming, in which case Google probably matters most because of Android.
Anyone that actually cares about top graphics or game development tooling is either on Apple or Microsoft platforms.