Correct, a chronologically "new" movement doesn't automatically mean "New Religious Movement." Opus Dei is accused of being a cult or sect by a lot of people, and their founder was canonized by John Paul II. Wikipedia has an article Controversies_about_Opus_Dei. They are not listed as a "New Religious Movement" nor should they be. Virtually all the "New Religious Movements" follow pre-Christian pagan/gnostic beliefs or publicly dissent from major beliefs of traditional Christianity. Again, it needs to be seen how the group fits into the three major points I skimmed from the New Religious Movements article at the beginning of this section.