Really, they are. The pain they were in FO1 is diminished in FO3 to a slow, low level target with added arc projectile. You would think that a creature with six legs could zone in on you like Batman, but no. Crawl, crawl, crawl to your death you gross annoyance. You add nothing to the scary factor, muteness, lack of expression beyond that blank look on your face / faces. Then you reappeared in New Vegas with zero improvement. Why?
Oh ghoul, you so crazy with your hissing. Why can't centaur be terrifying like you? Raise your hand if you died to a centaur in your last play. No one?