A question about a recipe: Pumpkin Cupcakes with Chai Cream Cheese Frosting

I have a question about step 2 on the recipe "Pumpkin Cupcakes with Chai Cream Cheese Frosting" from SmallKitchCara.
It says to add ginger to the dry ingredients but not how much (it's not in the ingredients list)
I tried using 1/2 teaspoon and I think it was too much, but they still tasted great!