The tanbi style is mainly a thing of the past. It has been replaced by BL stories - mass written, easy-to-read stories. Even authors known for their tanbi works like Yoshihara Rieko (Ai no Kusabi) now write mainstream BL and no longer use tanbi style. It's probably because tanbi, like its name, pursues beauty both in language and storyline. It's not simple and fast-paced like the modern BL stories.
Tanbi is like shounen ai, no longer written but important in the evolution of modern BL.
Tanbi sometimes is used interchangeably with boys' love by bookstores, but that's an old usage.