answer:There’s already dispute about whether anyone has suffered radioactive exposure. It is reported that the government has said zero, but that is contradicted by reports of nuclear worker exposure (maybe 4 individuals). There’s also reports of attempts to cool reactor(s) with seawater, which seems to be regarded as a last resort measure due to the corrosive effects of seawater. I would guess that their evacuation radii are probably the most reliable indicators of risk/damage, but that they are minimizing to some degree other internal reports and descriptors of the risk at hand.