Comment Actual answer. (Score 1) 16
Nobody in the entire thread could be arsed to actually read the blog post but not far in they tell you...
An open source Vulkan driver on Windows opens up a number of possibilities: a shared codebase across platforms, easier debugging and experimentation, faster turnaround on fixes, and a path for the community (e.g., game developers) to report problems or contribute improvements that benefit everyone regardless of operating system.