Magnum cooling

Most of those have computers and emissions equipment that require the higher temps, too. This is an apples and oranges comparison.
The fact that you can get the engine running "too cool" still works. Even if not for "emissions" reasons there are reasons to run the engine a little warmer... 180-200 running temp is NOT overheating. With too low temps you're not burning off condensation in the crankcase, and fuel wise fuel puddling isn't good even if not an "emissions tuned"ride.