The article gets a few things wrong, but the basic premise is quite sound.
iOS 7 is a worse operating system than iOS 6.
And it's not only less stable, it's visually uglier. Now, stability is important, people notice crashes, but ugly is always in your face.
Apple knew how ugly it was before it was released, plenty of us told them, and they had plenty of opportunity to backtrack and not release something so incredibly ugly. But too many egos were apparently...