The trouble is that these things don't always get caught. In the example, the statements were there before and after In-App Purchase was implemented. It wasn't

The trouble is that these things don't always get caught. In the example, the statements were there before and after In-App Purchase was implemented. It wasn't until some reviewer for another completely-unrelated change saw that text and decided it was a problem. The time between the newly-decided "violation" and the last review is measured in years. As a developer, you add notes telling the reviewer what has changed but this doesn't stop the reviewer from scanning through everything looking for either overlooked issues or newly-emphasized rule interpretations.