I feel like attributing this to Valve

What exactly do you mean by "this"? The post is about the 5 year anniversary of Proton. Also, why do you consider crediting the developers of Wine disrespectful? I just can't follow.

Of course Proton wouldn't have been possible without all the many years of work that went into the Wine project in the first place, and everyone who contributed to Wine should be applauded for their effort. Valve has funded a lot of extra work though to get things like DXVK and VKD3D-Proton for the translation from Direct3D to Vulkan into a state where performance can be really great! Valve also funds work on Linux graphics drivers, Linux kernel work and the list goes on.