Have you forgotten where you are? This is a WoW forum. Extensive and in depth fictional histories with hosts of races and even made up languages are extremely common across fantasy settings in book series, video games, table top RPG’s, collectible card games, shows, and movies nowadays. It’s pretty much expected.
Tolkien’s depictions of dwarves, elves, orcs, goblins, etc have all pretty much become the generic versions that people think of. Being synonymous with “generic high fantasy” is a strength of Tolkien’s legacy.