I agree that religion has been often a force for division. But the real obstacle is not religion but extremism. In past centuries extremism was often found in religion and still is today to a degree. Extremism however can be found in all kinds of ideologies.
If religion were to end tomorrow we would still have extemists. Mankind is beginning to mature and realize there is no one true religion. Of course not all have realized this as the op ed pointed out. We also need to let go of other extremist view points.