No, they are "famous" for having the best drivers but not open sourcing them.

NVIDIA's drivers are practically the same size as an OS anyway. Arguably they are an OS, for the GPU instead of the CPU. So it's not a huge surprise they don't give it all away for free, especially as software is a competitive advantage for them.

CUDA on Linux just works. And works very well. If anything most CUDA workloads run on Linux machines, and it's completely pain free compared to setting up ROCm even on Linux.

From what I understand that was about them not cooperating with the kernel devs. and that their driver was a black box that had to interact with half the kernel didn't help.

Driver wise my worst experiences where all solidly in the ATI/AMD binary camp, with the constant need to exorcise nouveau from various systems second.