Those who have had or perceived issues tend to be the loudest.
I have had a good experience with Nvidia and when there is an issue, I report it and Nvidia fixes it within months. The only time I have seen a better turn around was Intel graphics, where they fixed things within 24 hours after I pointed out a bug in their kernel driver. AMD graphics on the other hand seems unresponsive to community reports or outright refuses to handle issues.
For example, they refused to implement VK_EXT_fragment_shader_interlock in AMDVLK despite implementing the equivalent for D3D12 on Windows:
The damage in that case is limited to Windows, as the community driver for Linux implemented it, but it made cross platform support in emulators more difficult. If it were not for Valve working on the community driver, the Linux experience on AMD graphics would be no where near how good it is on Nvidia graphics.
