Why do skinny people like to say they are naturally that way!!?

would they accept it if a fat person said they are naturally that way. I know loads of skinny people who eat like 1 meal a day-thats not normal or natural. most celebrities(women) are anorexic/malnourished. think about it! what is the likelyhood that most of them are "naturally thin" how is a boney woman with no , no thigh or bum attractive to most men? it beggers belief! if you claim to be naturaly thin then you claim to defy sciene and logic! Or..you are ill with something...a tapeworm for instance.The fashion industry is breathing a sigh of relief when they hear these so called naturally skinny girls claiming to eat and not gain a pound..it means they dont have to justify themselves!