The situation has been changing rapidly since summer. According to my research, if you combine their desktop and cuda bugginess (for 7900 XTX) they are approaching the nvidia level of bugginess on linux, which is surprisingly quite high (much much higher than what it was say 5 years ago when nvidia just worked). One just needs a glimpse at their forum https://forums.developer.nvidia.com/c/gpu-graphics/145 to gauge the situation.

I just bought a 4090 and the desktop experience I get is much worse than what I had with the gpu embeded in the Ryzen 7950x: Wayland doesn't work, in Xorg there is tearing in mpv, alt-tab sometimes breaks in gnome. When I launch memory intensive cuda kernels the whole desktop becomes unresponsive. The drivers spews Xid errors in dmesg and breaks for certain applications, such as embergen.