Fan too close to radiator?

After reading this post I just do not understand how you cannot run a Shroud to help keep you engine cool. I once had a heating issue where my car would run around 200+ degrees with a Fan shroud, an OEM fan along with a 180 degree thermostat in my HP 340. I ended up replacing my fan with a 17" flex fan and shaved .500" off from my fan spacer which allowed my fan to be about 1.25" back from the radiator which allowed more air flow over more area of the radiator. This move helped to reduce my heating issues where now my car runs between 180-190 degrees even on a hot day in traffic.