Corey, Mozart isn't saying that 140 degrees is not hot. You are not reading what he is typing. He is saying that while 140 degrees kills MOST bacteria it is not hot enough to kill all BUT that the detergent used, which normally contains some chlorine bleach, is what REALLY helps with the sanitation of things like your plastic cutting board. It's not the water alone. Without that chlorine bleach you MIGHT be just spreading some bacteria to every dish in your dishwasher.
Somewhere you are missing what he is saying as you have said it several times now.
"Count yourself...you ain't so many" - quote from Buck's Daddy