I agree with your sentiment but be factually accurate if you've looked at the iOS 6 App Store on day one it would differ in a plethora of small details then the one we have now.
You might be right but until there is actual confirmation from Apple that they perform data-driven experiments to improve the App Store, based upon the many glaring problems that have been left unfixed for years I have to assume there isn't anybody at the switch performing legitimate experiments to drive these design changes.
