There's a vast difference between running a spread option offense (like college, ex Oregon, Utah, Florida, Auburn now) and running a 4-5 set "spread" offense in the NFL
The routes and reads are vastly different...there is absolutely no similarities that I see between those offenses and what New England or New Orleans does now.
Your first statement I absolutely agree with, there's no way in hell I'd go to a school that runs that gimmick offense if I thought I had any chance whatsoever of playing QB in the NFL one day.