This reminds me of the discussion I had a few weeks ago about racial ability scores. Some people get so bent out of shape about a Orc that happens to be weak or halfling that happens to be unusually strong. It's a fantasy world and doesn't have to be realistic. I have no desire to play a fat character but I also have no issues with them giving people the option too. If people want to roleplay as an overweight character than good on them. The fun of tabletop has always been for alot of people not being restricted by tight rules and being able to use their imagination