That article is nothing new to me. In fact, I have the exact same traits that are mentioned. People who don't know me well often perceive me as an Extravert. So despite a strong Introverted preference, I'm technically an ambivert. And yes, I both daydream one minute and the next I'm rooted in reality, but I have the strong preference of N.
Traditionally, creativity is about bringing Intuitive insights of the imagination into reality. Specifically, that's Extraverted Intuition -- inner conceptions directed into the outer world. So yes, there is detail work in the traditional definition of creativity, but the details are based in accordance with a personal vision.