Earlier quoted context omitted.
So those calories don't even get a chance to be used in their original form before they're stored as fat. Sure they do! Don't forget about glycogen.
I don't know if we're understanding each other... I'm saying that there are carbs that get transformed into fat. These calories, by definition, do not get used until the fat is released from that cell. Which could be a loooong time. You're right, glycogen is another place that carbs can go. But unless you're exercising there probably isn't a lot going there.
If you're exercising, your body doesn't build glycogen; rather, it shuts down the metabolic pathways for glycogenesis because burning glycogen while building it is very inefficient. (It's a form of hysteresis.)
... painting with broad strokes because my background is in biochemistry, not nutrition.