I'm not the person you replied to but I think they still have a point. Your quote makes a mention of why ginger is used in winter since the middle ages, fair enough, but I highly doubt cinnamon and nutmeg were chosen consciously for their insulin interaction- first because it's a relatively mild effect, second because this knowledge is relatively new (did humanity know of insulin before using these spices during the holiday season?).

I think most people reading the headline expect to find some strong historical context on why, for example perhaps these spices became cheaper or more popular during some period for whatever reason.