Not blinding other traffic on the road is a safety critical concern. A few seconds of being blinded is enough to cause a serious accident. This means that any technology that is intended to legitimate brighter headlights by masking other traffic needs to have something like a ≥99% efficacy. (Exact number doesn't really matter.)

> one of the german makes already has something that exempts a car in front of you

… and this technology does not have that level of efficacy, and neither do any of the others.