I generally agree, but since they aren't exactly an organized group, philosophical differences will come about from time to time.
That said, it's kind of hard to imagine doing something against their site without harming innocents while at the same time doing anything which draws attention to problems there. The SA police response was initially denial followed by "no comment." So they still aren't doing anything as far as anyone can tell. And according to the two articles, they are also quite negligent in some areas while active in others which speaks of agendas, laziness and/or political biases among other problems. This is "a shaming."
I have been casually following the problems of South Africa and I am less than impressed. Somehow I had rather hoped that they had learned that the answer to racist law and policy is to do away with racist law and policy, not to "reverse it" by creating more racist law and policy which punishes the "race" of a person rather than individuals responsible. So it goes to show that both the US and South Africa (as well as many others) have some growing up to do.
And seriously, while I wouldn't do it, I can understand why a group interested in justice and equality would expose the sensitive details of people in the databases. If/when harm comes to them as a result of the leak, it would bring more global attention to the actual problems. And it's not like there's not already a whole lot of danger and unfairness in South Africa -- the "net condition" will not really change. But pubic awareness and especially global public awareness will have been raised, which makes it a "net improvement."