If there were a parental control for the app store that blocked objectionable content, off by default, this whole issue would go away.
Um, that's exactly how the parental controls for the app store work. Apple uses the rating system to determine what apps are considered objectionable, the parental controls block access based on those ratings, and access to everything is enabled by default.
That's not the case anymore, since the introduction of parental controls in iPhone OS 3.0. That should have been more than clear from the article, Schiller and Gruber both emphasize precisely that point.
Um, that's exactly how the parental controls for the app store work. Apple uses the rating system to determine what apps are considered objectionable, the parental controls block access based on those ratings, and access to everything is enabled by default.