The article talks about low frequency and high amplitude. The sound waves near a subwoofer definitely moves the air more than a few ångström... And you don't w

The article talks about low frequency and high amplitude. The sound waves near a subwoofer definitely moves the air more than a few ångström... And you don't want low pressure, but high, so the air speed is low. Drag is proportional to the density, but proportional to the square of the speed.