This is not fair or true, Wine developers did a lot of work, the big progress happened recently because Vulkan drivers that allowed a better reimplementation of

This is not fair or true, Wine developers did a lot of work, the big progress happened recently because Vulkan drivers that allowed a better reimplementation of Directx11, Dx9 worked fine before Proton and Vulkan. Valve made a big contribution now but is not correct to give them all the credit.