We're talking about having a constant up-to-date driver on par with Windows for a major GPU card manufacturer. A driver which has caused a large amount of desktop users to return to Windows due to its historical issues.
While I get the reasoning for rejection, the typical OSS rejection attitude is also problematic. I kinda don't see a dialog happening here on how to resolve problems both sides have, just a repeat of posturing which has historically brought us awesome things like binary blob drivers that only work with single version of kernels (yes, I'm looking at you every ARM GPU ever!).