Apple has master key for encrypted iCloud contents

I'm astonished to see nothing about this development here on the forums: apparently and admittedly Apple has a Master key for the content it stores on the iCloud.

Source: http://arstechnica.com/apple/news/2012/04/apple-holds-the-master-key-when-it-comes-to-icloud-security-privacy.ars?clicked=related_right

or

http://www.appleinsider.com/articles/12/04/03/apple_retains_master_encryption_key_for_icloud.html

Does nobody care or have you all suspected it all along? Just curious...