There is a fine line between showcasing the beauty of ASL, and utilizing sign language as a gimmick. Hearing artists often toe this line without even considering the opportunities that exist for better collaboration.
We are often in a fighting match with ourselves. Sometimes that little feisty perception is kicking our strong solid self's butt, and sometimes we rise above those jittery little thoughts and let them sleep, only to wake them up later.
As a culture, we view fame -- despite its well-known dark side -- in many ways as a pinnacle of an artist's career; artists across the world wish for their work to be recognized, popularized, appreciated by the masses.