While there are such people who are handicapped, those handicaps have nothing to do with the ability to hear. It is the same as with hearing people who are handicapped. The handicaps have nothing to do with people's ability to hear, either. Of course, many people who are deaf do not naturally speak the same language as hearing people. Through the many forms of sign language they are able to communicate among themselves quite well.
Sign language is a more rapid form of communication than talking.
Sarah, a character who is deaf in the play, says she can with one sign communicate a meaning which would take a hearing person 50 words to explain. It is when the hearing impaired community is forced to adapt to the spoken language that problems may develop. There is none. The American people have a tradition of stubbornness when it comes to change. We prefer to continue to do things the way we always have whether it is the language that we speak, the way that we eat or how we measure weights and distances.