In my view the horsemeat-as-beef scandal demonstrates that the system works and that mislabeled meat gets detected. In this case the meat was perfectly edible, it was just mislabeled.
But, as the GP said, this so far seems to be a singular incident of a single producer trying to make an extra profit, which I don’t really think justifies throwing the entire system overboard.
They think it started in August 2012, and it was detected in January 2013...