That should be all that needs to be said, but sadly it usually isn’t.
Passiveness has never accomplished anything. Ever. Sometimes you get lucky and a situation resolves itself without any help on your part. But it’s more common that negative consequences come from sitting back and not meeting that unhappy task head on.
Passive Aggressiveness is its own animal. This is the behavior of trying to force someone to change through guilt. As Wikipedia puts it (and the site nails it on the head in typical fashion):
Passive-aggressive behavior is the indirect expression of hostility, such as through procrastination, hostile jokes, stubbornness, resentment, sullenness, or deliberate/repeated failure to accomplish requested tasks for which one is (often explicitly) responsible.
As I put it yesterday, time and energy are the most limited of resources. Passive Aggressiveness wastes both of these in often extreme manners. The definition above lays it out clearly.
Don’t do it, don’t participate in it. Meet it head on and you will solve problems that much faster and avoid wasting your valuable resources. Sure, it may cause some temporary discomfort but the value solving problems adds is greater than any temporary discomfort.