Evans Coolant Temps

So Evans is very..... passionate about no thermostat. I'm with you and others with that slowing the coolant down and getting it to cool in the rad would make sense. But they want the most flow humanly possible. They claim that since their coolant doesnt boil it doesn't need as much time in the rad....seems like that goes against logic to me...
Here is a start
Griffin ExactFit Radiator for 71 Dodge Scamp - Part Number 5-00154