I remember Valve articles from that period when the Windows 8 Store was being introduced, and Valve started pushing Linux. I remember reading a similar article

I remember Valve articles from that period when the Windows 8 Store was being introduced, and Valve started pushing Linux. I remember reading a similar article from them on the subject, but that one mentioned DirectX 9 Source Engine on Windows performance versus OpenGL 3 on Linux, which is a shady comparison to say the least. Just mentioning it, since such details got curiously ommited in the referenced article.