My guess is that this hacker group, and almost ALL hacker groups are predominantly male, and that testosterone is to blame. Sort of like smearing pooh on the employee wall in impotent rage, they attack those that could potentially be their alies..IE highly intelligent people growing more and more skeptical about corporate rule.
The philosopher Colin Wilson explains in his now dated book True Crime, that the first hackers were Libertines...and this pans out...because aside from fascist countries that might put guns to the heads of nervous energy computer diddlers into hacking large scale, most people who have tons of knowledge are too intelligent to attack, kill or otherwise hurt totally innocent people, or people who they in no way have informed evidence as to personal offense to they themselves. Libertines just want to stick it to the man, but, as our recent Rapture declaration by one Camping...the age old Doomsday guy and the would be Libertine, are seduced by being the latest internet/world media craze...even for a nanosecond.
I only watched on episode of Extra Credit and it was the one giving the lowdown on the PSN hack. The best thing they explained is...A. That in the US we enjoy things like smart phones and GPS functions because it both rules, and that our government does not protect us from corporate tentacle rape of our privacy and that B. Europeans don't get all the hipster awesomeness because their governments are more keen to Big brother abuses. Extra credit, like any other webisode, cannot have Yahtzee's wit, so they need to do whatever it takes to be noticed, so maybe they were sensational in saying all hackers are virtuous, and failed to put the modern hackers in the light of this modern day viral internet meme madness.