I have a hard time at seeing polarity in any other way than making the exploration of love and duality of self being among other-selves (which also are self) more complete.
Perhaps an STS entity to adhere to the STO polarity would simply be infringing upon itself. It would deny his right to have his own desires as the Creator, as such his actions would radiate harmony but this harmony would not be found within itself. In short it wouldn't allow itself to be what it is and as such reject the portion of the OIC it incarnates.
Maybe STS entities do treat others in the way they want to be treated, or have been treated. Plunging the world into darkness is a way to plunge themselves into darkness afterall, to hurt other-self is a way to hurt self, etc.
Perhaps an STS entity to adhere to the STO polarity would simply be infringing upon itself. It would deny his right to have his own desires as the Creator, as such his actions would radiate harmony but this harmony would not be found within itself. In short it wouldn't allow itself to be what it is and as such reject the portion of the OIC it incarnates.
Maybe STS entities do treat others in the way they want to be treated, or have been treated. Plunging the world into darkness is a way to plunge themselves into darkness afterall, to hurt other-self is a way to hurt self, etc.