Realistically, which do you think there will be more of as a result of this article being published, developers getting rid of in-app purchases or consumers stealing in-app content?
If you read the last couple edits, you will see that this hack exposed that Apple sends the App Store username and passwords in clear text to its servers, so similar hacks to this could be used for more malicious purposes, exploiting an inherent security flaw of iOS. Then the last edit, Apple acknowledges the hack and is working to re-ensure security. It's good that this hack was released because now it forces Apple to fix that.. just lucky that this hacker who discovered the security flaw didn't intend to steal info from users