The original division of the visible stars into shapes, and the assignment of personalities to newborn babes according to which imagined shape was in a certain position at the moment of their birth was arbitrary to start with. NASA deciding that those divisions were wrong doesn't alter anyone's character.
They could equally have announced that study of the head of a pin under a microscope reveals space for twice the number of angels to dance there than was previously agreed by learned theologians.
Have you noticed that the personality descriptions under the various Zodiac signs never include a tendency toward grand larceny, gratuitous violence, mass murder and public self-exposure? Not very inclusive, are they, I wonder why?