Not entirely true. In a flying wing there is constant flap adjustment needed to counter balance a CG (center gravity) offset. The amount of counter drag is high

Not entirely true. In a flying wing there is constant flap adjustment needed to counter balance a CG (center gravity) offset. The amount of counter drag is higher than a narrow winged tailplane. Obtaining a correct CG is therefore also more crucial. With variations in passengers and other load this will be a challenge.