We have decades of experience creating ports with Wine, and we are very pleased that Apple is recognizing that Wine is a fantastic solution for running Windows games on macOS. We did not work with Apple on this tool, but we would be delighted to work with any game developers who try out the Game Porting Toolkit and see the massive potential that Wine offers.

Source: Wine comes to macOS: Apple’s Game Porting Toolkit powered by CrossOver source code - CodeWeavers

Interesting. I hope this helps other Wine tech, like Proton and SteamOS.