No, apparently they don't run out of lore.
The latest Lord of the Rings Online Lorebook entry examines the Vale of Thrain.
Leading down from the lofty heights of the Blue Mountains, where lies the gate to Thorins Hall, is a long and wide valley known as the Vale of Thráin. Many Elves and Dwarves will become quickly familiar with the Vale as they begin their adventures in Eriador!
Check it out at the LoTRO Lorebook.
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