As the anti-LotR article and posters have mentioned, Tolkien obsessed over the details of his world. Unfortunately, they glanced over an important reason for this description. Most novels are set in our world or a close replica. Thus, the background is already established and the world familiar to the reader. Fantasy resides on the basis of a world that starkly contrasts with our own. Therefore the details of the world must be expounded or the world and the story become an enigma as the reader struggles to understand the actions and characters. Versimilitude is the backbone of the escapist genre of fantasy and so the setting becomes even more integral to the storytelling. Most other genres already have versimilitude established as they are set in worlds similar to our own and so there exists no need for world building.
Most modern fantasy writers have the difficult task of world building already completed for them. They fall back on the world conventions laid out by Tolkien; stealing tall elves and grumpy dwarfs to create their setting. This does not excuse Tolkien's obsessive detail, his characters are flat and his description often tedious. However, one can not discard the fact that he created the foundation for other authors to focus on characters and action.
Most modern fantasy writers have the difficult task of world building already completed for them. They fall back on the world conventions laid out by Tolkien; stealing tall elves and grumpy dwarfs to create their setting. This does not excuse Tolkien's obsessive detail, his characters are flat and his description often tedious. However, one can not discard the fact that he created the foundation for other authors to focus on characters and action.