If they really understood, devout JWs would steer clear of Tolkien's works.
J. R. R. Tolkien ... described The Lord of the Rings in particular as a "fundamentally religious and Catholic work; unconsciously so at first, but consciously in the revision". While he insisted it was not an allegory, it contains numerous themes from Christian theology. These include the battle of good versus evil, the triumph of humility over pride, and the activity of grace. A central theme is death and immortality, with light as a symbol of divine creation ...