> Valve does not officially support NVIDIA gpus atm

Given NVidia's reluctance to support DRM (direct rendering manager) and Wayland, plus the general levels of nightmare that their official Linux drivers are, I wouldn't say this is Valve's fault. They've already been a poor choice on Linux 20 years ago. Even Apple has always been uneasy about their relationship (while Radeon was a less powerful choice for "premium" machines).

Also consider the ongoing AI hype. NVidia is right now very busy making their GPUs do exceptionally useful work on Linux - except the money is not in the graphics.