What about the 'wrong' things that Sony has done that the documents show?
So what? Who cares? None of those are actually illegal (the VFX salary wasn't a "collusion", but based on an industry survey), and had no public interests. The public doesn't have the right to know these things. They were all legitimate private discussions that any private entity has the right to have. Some of these discussions are with government officials, but you are allowed to have private interactions with government. (Your SS# comes from government, should that be published? How about your tax returns?)
Privacy rights aren't only for nice people.
If you want privacy rights, and if you're against the NSA, you better make sure that mean people also get their privacy rights, too. Honestly, this is worse than the NSA, because the NSA only keeps their data to themselves, whereas these hackers publish the data for everyone to see. This will only encourage more hackers to violate people's privacy, and anyone defending these guys are saying they don't believe people should be allowed privacy rights, which is horrible.
Be vigilant about privacy rights. Don't be lazy about it.