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Quite the contrary. As mentioned above, carbs help you build a killer physique. They do so because they are the preferred fuel source for our body. They are essential for providing and replacing energy stores, and therefore play a crucial role in overall energy levels, performance, and muscle recovery. You just have to be aware of what types to consume and how/when to consume them.
The real physique killer is the over consumption of calories, not carbs. Unhealthy weight gain is the result of your body storing excess energy as fat. Regardless of the Macro, a caloric surplus (or deficit) is what will determine your body composition over time.