Nahhhhh- I just don't hold to "rules" much when most of them are set under the guise "set these ratings so that even the missing link can drive this thing."
So much of towing really comes down to driving experience, driving habits etc. Lots of people would not be safe towing a pop up trailer with DRW. On the other hand- have seen a number of 14-15 year old kids towing harvesters behind 25 year old half ton trucks- safely!
Somewhere along the lines a modicum of common sense has to factor into these things- There is a gray area.