>>717964541
Nvidia used to have the best drivers for Linux gaming with OpenGL 10+ years ago.
What changed is AMD published documentation, Valve started investing in a third-party created Vulkan driver called RadV, and just everything on Linux switched to Vulkan. The Nvidia driver hasn't really gotten worse, but it has basically stayed the same while AMD got a Linux exclusive high performance driver focused on the specific features needed by DXVK and VKD3D.
Also doesn't hurt that the RadeonSI OpenGL driver caught up to Nvidia, but OpenGL is a lot less important for gaming than it used to be.