This. It had to do with wealth. The same thing happened to tans. It used to be that a tan meant you were poor and spent most of the day outdoors in fields. Now a tan signifies that you have time to spend outdoors. Food today is so available in developed countries that it is easy to become overweight. It's becoming the norm. Hams that refuse to go down to a healthy weight seem to have this idea that mediocrity is beautiful.