The point of that paragraph wasn't that
DNP isn't lethal, it was that
DNP does not raise core temperature at normally used doses. Your body will radiate heat like a mofo, but if you actually check your temp it's often times LOWER than 98.6 degrees (normal). It's only if your core temperature rises that you may be in danger of death through overheating. Dehydration would be a more likely reason. It has been argued that the guy from EF was killed not by DNP but by the diuretics he was given by the doctors in order to try and flush the DNP out of his system. Obviously this would dehydrate the body and probably fuck up your potassium levels to the point that it could kill you.
Never mind the supposed 155 deaths from
Ephedrine.....or the number of people that have died from heart attacks while doing cardio. Again, no one is trying to paint the picture that DNP is no big deal or harmless, just use common sense with it.