As a user...why would I care?

If my Ferrari has an issue with the brakes and I go to my dealer I don't care if the brakes were by Brembo.

Blaming the vendor and their drivers is just trying to shift the blame.

Generally true, though this particular case is due to a single company deciding to not play ball and generally act in a manner that's hostile to the FOSS world for self-serving reasons (Nvidia).