Will this stop the AMD drivers are bad myth? I don't think so. No matter what AMD does they still get the bad press just look at some comments on the comment section of that article to see it, is like, if AMD is making better drivers then the older ones surely were bad or AMD didn't knew how to code to its own hardware...
No people AMD makes the hardware, they know perfectly the ins and outs of it, without knowing more about it, i assume they are just refactoring their old software, they started on the interface side, now perhaps they went deeper, perhaps removing unnecessary stuff and optimizing others, is a normal thing to do when a code base reaches a certain age and complexity.
Is like D3D11/OpenGL vs Vulkan/D3D12, is not like the past graphics API's were bad code or not optimized code or even bad design, they are just a old software design and paradigm, carrying a very old baggage that in this day and age doesn't really serve the new hardware design and games necessities, specially AAA games.
IMO this is exactly what is happening to AMD GPU drivers their old design was not bad is just not well suited to their "new" GCN GPU's so why this article claims the new drivers increase performance for GCN only.
I was never a AMD fanboy but later i'm more and more sounding like one, all because day after day i'm seeing that this company is getting shafted not because it really deserves it, but because the other side has a bigger army of fanboys willing to lie and fight for it and a army of misinformed users recommending it like there's nothing better around.