Add to Playlist Only works for specific Song or Album Not Artist, Composer, or Genres

Add to Playlist Only works for specific Song or Album Not Artist, Composer, or Genres. Although you are given the option to add an artist, or composer to a playlist, and it will generate a pop-up window saying it was added, when you go to the playlist, the artist/composer doesn’t show up. Only media such as songs and albums can be added to a playlist. So perhaps the option to add other entities to playlists should be removed.