War is toxic. The American soldiers who got sick from the burn pits weren’t burning DU.
DU is toxic in the same way mercury or cadmium is toxic: as a heavy metal. Its reactivity is very low. It’s entirely believable that Iraqis are suffering birth defects and other sicknesses from the toxic after-effects of the war, and also that DU plays a small part in it. The article doesn’t present any evidence that DU specifically and not the other thousands of toxins released during the war is responsible.