They DDoS'd, which isn't really a hack. This doesn't appear to me to be about about political activism, the same group has been active the last few days "attacking" Blizzard, Runescape, and League of Legends. For them to claim now to be condemning Sony for being "greedy," (Even though they are the only network for console gaming that does not charge for online play,) Would in all honesty seem out of character from the past few cyber vandalism of theirs where it appeared to be out of nowhere, nor did they give any political backing to the reasoning in prior events.
And then you have an actual hacking collective like Anonymous, (Whom, Lizard Squad had actually claimed to be affiliated with,) who for who denied any such affiliation and actually degraded the reasoning, and quality of the vandalism on their IRC. A group like Anonymous whose primary focus is to be a cyber political superpower comes back around to bad mouth these new comers.
In all honesty, just seems like a group of high school kids who have a little too much free time on their hands.