To a degree yes. Cardio uses energy but that doesn't have to be fat exclusively. In fact, the only time your body uses mostly fatty acids for energy is when you are alseep. too bad your overall energy consumption is rather low then.
At all other times, your body uses a mix out of fats and carbohydrates to perform the task at hand.
Those who know me also know about my bias regarding cardio. I just don't see it being your primary weight loss source and here is why: to burn of one pound of fat , you would have to walk about 35 miles. if you have 20 lbs to lose...well you get the idea.
In your battle for a better body, your diet is the single most important item and most people fail miserably at it. They vastly underestimate what they consume and , by the same token, overestimate what they burn. Therefore ,it is crucial to count calories, at least for the beginning so that you have a proper starting point.
In my opinion, 85% of your caloric deficit has to come from your diet unless you can devote several hours daily to performing cardio. Cardio also cuts into your recovery, so I would use it toward the end of a diet or when you plateau.
This is probably an approach that most people will disagree with but you simply have to get your diet under control, otherwise cardio can mask an insufficient diet since it will cause you to lose weight ( not necessarily fat though). In the long run, however it will lead to muscle loss and overtraining.
So to sum it up: weeks 1-2 cut calories by 30-40%, no refeed days
weeks 3-6 cycle carbs every 5-7 days
week 6-8 add 3x30 minutes of cardio if weight loss has stalled
weeks 9 and beyond: add a fat burner if needed.
Most people start the diet, cardio and a fat burner at the onset of the diet without establishing their parameters properly. Such an approach will yield sub par results at best.
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