(Reuters) - Exercise bike and treadmill maker Peloton Interactive Inc's latest Christmas advertisement has been widely criticized on social media as being "sexist" and "dystopian".The advertisement, called "The Gift That Gives Back", shows a woman receiving a Peloton bike as a gift from her husband following which she records her workouts over a year and shares them with him through a video blog.The company spokeswoman said on Wednesday it was disappointed how some people had misinterpreted the..