enlight me please

Can someone explain the decision of NCsoft to disable the drop of Fragments of light and keep the specters?
They said on their website, is because servers are full. Based on my stupid logic, servers are full BECAUSE there are 32847329 lvl 1 characters farming specters...

So, why would they keep specters in game and disable the drop? The fragments caused lag and server full?

January 4 to January 11, 2012: Main event period.
January 11 to January 18, 2012: Fragments of Light no longer drop but any pre-accumulated can still be used.
January 18, 2012: Tersi's Light Agathions, Fragments of Light, and Specters of Light are removed from the game. All rewards stay in the game.