No, this is not necessarily true. Indoor cannabis can have some advantages over outdoor cannabis, such as more control over the environment, light cycle, and security. However, outdoor cannabis can also have some benefits, such as more exposure to natural sunlight, fresh air, and organic soil. Both indoor and outdoor cannabis can produce high-quality buds with high THC levels, depending on the strain, growing conditions, and care. The main difference is that indoor cannabis tends to be more consistent and uniform, while outdoor cannabis tends to be more diverse and variable.