Well there is always going to be people who stick up for them regardless of what they do. I'm not one of them though. While I do support some of the actions they've taken in the past, the fact it took them so long to do something about this is a joke. I'd bet good money that they're only interested now because the guy who started this attack on Sony got banned from PSN.
See I wouldn't be willing to give them a pass on anything, even their past actions. What needs to happen, is someone needs to kill their website and IRC Channels and keep them down, aswell as any new ones they put out.
I'm curious to see how sony will handle this. What "Anon" is doing is considered Cyber Terrorism, so it wouldn't be hard to get the FBI involved, and between them, sony, and private investigators, I wouldn't be surprised if in the next few weeks we see Anon either giving up, or end up with a knock on the door.