I actually don't agree with the general consensus here, but then I think it's down to the hardware people have.
I've got dual 295X2's in my build in crossfire, and if I don't get a driver update new games play like crap...
I understand it takes time to create game profiles (especially if Project Cars case of AMD ignored them pretty much until launch), but it is necessary for me to be able to play.
In fact, I think AMD pushed for GTA5 to have a launch driver, which even now still has some issues with performance.
I waited about 3-4 months for a driver for Dying Light, before they released 15.4 the game was simply unplayable. Again there are still some performance issues, but it's a lot better (read playable...).
My belief is that for an industry that is always/constantly changing you have to have a development team that can keep up with the load/requirements of your customers.
Someone mentioned Asus and the Xonar drivers, but the difference is that drivers in this instance are purely for stability. There's no requirement to add new features beyond the hardware capabilities and once installed sound will be good in every situation. With GPU's there will always be new games coming out, tweaks/optimisations, crossfire profiles, etc. that are needed otherwise things just don't work.
Put it this way, I've not once seen my GPU usage go to 100% on all GPU cores on my graphics card (okay it seems to work for benchmarks, which is hardly surprising). And all software devs keep saying the same thing, it's a driver issue. So what would I be left to believe?