Its called sharing. It was 100% designed into different camps given that all the goblins are segmented into different level ranges in their rooms.
Same shit happens for a lot of dungeons with several value camps near each other. Each one is broken up when more than one group wants stuff.
It makes 0 sense for this one random zone which has good xp and loot (for the levels) on all the camps to have a completely different rule set than any other camp in game.
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