Oh I see, that makes sense.I think he's saying that Valve managed to get almost everything playable on SteamOS, so you'd think Apple could do something similar given their resources.
Of course translating from Windows to Linux and DirectX to Vulkan on identical hardawre isn't the exact same thing as Windows to macOS, DirectX to Metal and a completely different GPU, and x86 to ARM...
With that said, we on the mac platform already have that - Crossover (Wine).but you do have a point there's probably less emulation overhead and complexity when dealing with similar hardware, unlike apple silicon. So there's more of an uplift in performance playing on linux vs. macos.
Using Crossover however does not move the needle of mac gamers one iota. If you're using crossover you're buying the game on the windows platform. The publisher is getting the sale, why bother producing a native macos version when they're already selling the game to mac gamers?
Edit: No knock on Crossover, I use it and its been great. It basically allowed me to retire my PC and be on my Studio 100% of the time