They really should.  Ever notice how many deathfats appear in fast food advertisements?  Absolute fucking zero.  Nobody uses fats for advertising except the token few, and even then they're usually only small/medium planet sized fats alongside many more humans.  You never hear them bitch about their lack of representation there do you?  It's Victoria's Secret or Protein World they go after.    No one wants their product tainted by deformed gluttons.