“Last but not least, Mac has ONLY 21 out of the Top 50 games working […] Mac is pretty much stuck in the dust with their non-existing Proton support.”

Even if you care about those other 29 games (how many games do you need to play, really?), that’s a rather one-sided view. You could equally have said:

Now that we’ve seen how successful Proton can be, we just have to have somebody (Valve or otherwise) produce a Proton-for-Mac. Then the Mac would have even better gaming support than Linux.

I agree, there is no technical limitation for a Proton-like solution to work on Mac. The largest hurdle is not technical: it’s that Apple has no interest in gaming on their own computers, which makes it a risky business to invest in (OpenGL is hardly supported anymore, Vulkan drivers are nonexistent, which means you have to write everything for Metal, and now you have a mix of x86 and ARM).

What does Apple’s alleged lack of ‘interest in gaming’ have to do with it? Proton was based on Wine, which was developed entirely *despite* Microsoft, not due to any help they provided.