the post you reply to probably means support for gl regarding features and performance. a server and a media center will do fine even without proprietary drivers... well, until someone update the color stuff in v4l again.
Maybe? But then probably even AMD/ATI does not keep on tweaking their drivers more than nVidia to improve performance & OpenGL-compliance for all their 12 years old HW... (but I might be wrong).
>>a server and a media center will do fine even without proprietary drivers...
Honestly: not sure (never tried). My big question mark involving the GPU frequency scaling (maybe now an issue only with "Nouveau"?) when using video filters (e.g. framerate sync and/or nice upscaling filters).
Same thing with a GTX 760 (currently using v390.42) on Gentoo: I kept that server running multiple times for many weeks at a time and never had crashes/weird things happening while doing GPU-mining, playing or just having the GPU idle while using the CPU.
As well with setting things up, I always just replaced the old card with the new one and that was it.