What the article is debunking is the myth that most of your heat is lost through the head; however, it also states:
This alone is reason to wear a hat. If your head feels colder than other parts of the body, then one should naturally wear a hat to feel warmer. And if one is going to wear a hat to feel warmer, one should do so in style, as we do with the rest of our body (coat, gloves, etc.).
"The face, head and chest are more sensitive to changes in temperature than the rest of the body..."
This alone is reason to wear a hat. If your head feels colder than other parts of the body, then one should naturally wear a hat to feel warmer. And if one is going to wear a hat to feel warmer, one should do so in style, as we do with the rest of our body (coat, gloves, etc.).