To be honest that looks like damage caused by bad handling or incorrect installation.
The pins in the socket are bent over and that one damaged pad looks like more than just burnt out.
Be careful with your chip and you will be fine.
They are bent over because they have overheated and melted. Try pushing a 13amp plug half way into the socket (just enought get contact), and then try running a kettle on it. It will overheat and catch fire pretty quickly

The problem they are suggesting is the foxconn socket is acutually making so little contact on about 25% of the pads. This can lead two one of 2 possibilities, high resistance on the pads with poor contact leading to localised overheating, or such poor contact that the CPU has to draw power from pads with decent contact, but overloading them in the process.
Eitherway, its primarily a problem in overclocked systems pulling higher than stock power requirements, but having a non foxconn socket is clearly a good idea if your going to go in for moderate to heavy overclocking.