I could be wrong but as I understand it. You know magnetism based on positive and negative poles, now they can read and write SPIN, which is another property of electrons (that are in everything, even things nonmagnetic). If it's true, and scales, we could use non-ferrous better materials to achieve what we do currently with ferrous materials.
Propegandists thrive by trying to convince people that they can't trust anyone, because it makes foolish people believe that every voice carries equal merit.