Thsi is the same thing that was in the Wall Street Journal earlier.
Actually, detergents hold dirt in suspension and don't depend on the suds holding the crap up top. They might be on to something with too many suds spreading all of the shmutz up to the top of the outer tub where it stinks.
Granted my Mieles are smaller than many other front loaders, but one coffee measure, two level tablespoons, of powder TIDE HE along with STPP is all that is needed except when I wash filthy cleaning rags, I mean cloths. That's way less than the measure that comes in the box recommends. Face it, the detergent companies are selling the stuff. Of course they tell you to use more. They want people to get clean clothes, too, and if you see what some people are wearing or the way kids are all over the floor anyplace they go, it's probably better to err on the generous side, especially when so many people are washing in barely warm water.