Why does the extent of one's hearing loss not define you as being part of the deaf-world?

The extent of one's hearing loss does not define you as being part of the deaf-world because being a part of a deaf-world is a choice. Specifically, the people included in of Deaf-World are the ones who have knowledge and experiences of being deaf and what it is like.

answer; group think;

answer; because they must appeal to a broad cross-section of the population;