If it is true, it's probably because of Jintha'Alor. A huge troll city practically hidden in the Hinterlands (it's just south of the entrance to the beach on the eastern coast), Jintha'Alor might be the biggest non-instanced elite area in the world of Azeroth. Home to a bevy of elite quests, tons of elite trolls, slimes and wolves, and (at the center of the city on the hill) the Altar of Zul, Jintha'Alor is definitely a great place to visit with a full party on your way to 60.
So why do so few people go there? When there's so much to do and see there, why do so few people make it to the Altar and create the Mallet?