People can become extremely offended and when some people become offended they may become rude and loud and say obnoxious things they normally would not say if they were not "prompted" to do so. Some people and food are like "men and sex"....they love it as much as anything or everything else in the world and they don't like to be judged on how they eat or what they eat or how much they eat. It just is something better left "unjudged".