There have certainly been issues (I've been on Linux with mostly nvidia GPUs since 2004) but it's almost always been caused by the module being outside the kernel, and a kernel update breaking compatibility sometimes, understandably. This has always been fixed quickly on nvidias end though. And early Wayland issues and the current DX12 -> Vulkan translation performance issues in more recent times.

But overall I've also had a mostly stable experience during that time. New hardware is supported mostly at release. Not always supporting all the latest features straight away mind you, but still. Meanwhile I seem to hear about issues with support for Intel and AMD cards at release frequently in comparison.