At its core BeeChat is not a user facing service, it is built to help other Hive developers and service administrators to integrate a communication feature in their apps if there is a need.
For example, in NFT Showroom and similar Hive based websites we are building, we needed a simple chat service where buyers and sellers can communicate without hopping into another app, so we have decided to decouple the chat module and release it for everyone other websites we might need this.
RE: Open sourcing BeeChat Client And Developer Documentation