The problem is that every icon seems to have a different creator separated by a wall of the other. And the color pallete is taken from a pastel version of candy crush saga.
It looks so aggressive to me. The whites are aggressive, the fonts, the icons. UUgghh.
I don't say that iOS6 was the best, but iOS7 looks worse. They can make something less puncky, and more homogeneous.
I don't know wich is the real problem, but looking at this, Apple has a huge problem:
Image
Thats exactly what happened. The icons were in fact designed by different people/teams without seeing the others that were being made. Not sure whos brights idea that was but it was confirmed by an engineer and reported on a few weeks ago.