I mean it's not too unbelievable. In 3U before they added the DLC missions for it the only way to get Hallowed Jhen Mohran was to fight Alatreon in the Village Quests. So while you didn't necessarily get blocked out of all G-Rank fights you weren't able to fight that monster unless you completed all of the village quests. Wouldn't be too strange to have a similar setup for some special quests in G-Rank for 4U.
XI Wiki



