Super foods made "super" by the media?

The more I read the more I feel that it's the media / select groups that define super foods year after year & sometimes just out of the blue!!
Even something as basic as an egg or a mundane spinach are loaded with nutrition... Wonder what's the criteria to gain cult status ??
http://www.mumbaimirror.com/others/health-lifestyle/Superfoods-of-2016/articleshow/51758297.cms