No reason to debate it any further. I read about a half-dozen seemingly reputable articles this morning, and one thing they all agree on is the need to release the pressure on the "click type" mechanism. That means cranking it down to near zero after use. There seems to be no debate about that, and even the manufacturers of wrenches instruct one to do so. Virtually all of the articles contradict what you say above.
I will concede that there doesn't seem to be a clear reason not to use it in reverse, except for saving wear and tear, and thus preserving calibration longer. I learned something new today.
P.S. And actually yes, over time car springs do sag and go lower. I've had to replace sagging springs on the 25+ year old muscle cars I've owned.