I do appreciate the theory I learned 25 years ago but at the end of the day I'm just another dumb Pilot that flies the Aircraft the way I'm told to. I don't have the luxury of questioning science while I operate my Airlines 100 million dollar Jet. It's their train set and I'll do it the way I'm told. The Airline in turn does it the way Airbus tell them to do it to minimize litigation against themselves.
It's all about butt saving at the end of the day.!!
Like I said KISS method works for me