I honestly don't know the exact circumstances. But my lawyer told me that DOS has in recent months said that they suddenly experienced a "big increase in the number of hardship waiver applications", simultaneously, the Philippines government decided to stop issuing non-objection statements to its citizens, so they were only left with the hardship route most of the time. There are a lot of Filipino J-1 visa holders here so the sheer number of waivers is apparently overwhelming the hardship category.