I don't have an opinion vis a vis other art forms but would use the term sparingly, given its generally accepted meaning. Thus the only 'geniuses' of the tenor sax, from the points of view of creativity, originality, influence and technique would be Hawk, Prez, Getz and Trane. Which is not to denigrate the talents of many others, by any means.
Have to include Sonny Rollins in that group!