Anger is just a feeling. It can indicate something is wrong. It can motivate you to make changes. It's all about what you do with it that matters.
Personally I used my anger to work really hard, go to school, raise my kids as non jws. That seemed more productive than trying to get my family out or going against the elders, organization as an entity. I just didn't even have time for that, and because I finally was improving my own life and not dedicating more time and energy to a crazy religion, my anger subsided.
Some here have felt motivated to work with others and bring awareness or change legislation etc. In the end we all have to figure it out for ourselves and although we were once JWs are circumstances are so unique and individual. For example, I was never sexually abused as a JW. I probably would have a completely different outlook towards JWs if I had been. That's the problem with generalizing all ex jws. It strips us of our individuality just like being a JW did.