This topic has been discussed before on other forums and threads
The general consensus is that these "optimizations" can be turned off by turning everything to "high quality" in the CCC settings. At that level, the settings look as good or BETTER than Nvidia's top tier texture settings. I'm not sure what's going on with the drivers, but there are ways around it, and for people to be crying foul on AMD for this issue seems unwarranted. This is why I never trust a single article. I always check my sources and if possible test their findings. There was a stink about the HD 5xxx series's texture quality too. It was proven to be game dependent. By game dependent, I mean it only affected a few and usually older titles.
Seriously, don't you have something better to do than trying to find fault with AMD's offerings? I can do the same thing with Nvidia's offerings (*cough* *cough* GTX 480 and 470), but I don't because it's completely stupid. Both companies have their faults. You realize that second graders point fingers at each other when the other person "does something" that's not nice.... Don't be a second grader.