From my understanding, when darkworkers begin to integrate their shadow self, they still do it for selfish reasons yea? For example a darkworker doing philanthropy is doing it to make himself feel better or whatever other selfish reason. But because the deed itself is lightworker-ish it benefits many people as a whole and increases his power as well.
Or do darkworkers suddenly start caring about other people when they've reached a certain level? Based on my experience its almost impossible to have this kind of shift all of a sudden. But I'm not polarized in any direction yet so maybe I'm wrong.