Are carbs bad for you?
No. Carbs are not inherently bad, and they do not bypass calorie balance. The better question is what kind of carbs, how much, and in what context.
Fruit, potatoes, oats, rice, beans, lentils, vegetables, and whole grains can support training, fiber intake, fullness, and long-term diet quality. Sugary drinks, desserts, and highly refined snack foods can also fit sometimes, but they are often easier to overconsume and less filling.
For fat loss, total calories matter most. For performance, enough carbohydrate can help. For health, fiber-rich and whole-food carb sources usually deserve more space than hyperpalatable snacks, sweets, and drinks. Do not turn one macronutrient into the villain when the real issue is the whole pattern.