You make a good point, but after so many problems with the current system, Apple really ought to introduce a separate category for such Apps. They're explicitly telling customer that that App contains "Frequent suggestive themes" and "Frequent bad language". At that point I would assume that the App was badly named and not really what I thought it was. Those are actually very inaccurate statements about the App.

However, since the integrity of parental controls needs to be maintained, I don't see why it would be so difficult to flag an app as allowing a user unfiltered access to the Internet. The problem I see with the current situation is that the statements being made in the App store are false and misleading, even though they're there for a legitimate reason.

edit: I just re-read your last statement - I guess we're not disagreeing after all. Still, I'm really surprised such a change has still not been made. I don't even follow Apple much, and even I knew about problems like this one long before the recent big updates.