In my vehicle, the 'gentle slow down' part that's associated with the radar-driven auto cruise control usually works OK. I'm referring to false triggering of AEB in completely-inappropriate circumstances when no obstacle is in the car's path.

If someone has built an AEB system with the degree of immunity from false triggers that's needed to make it a net positive for road safety, I haven't seen any evidence yet. Similar complaints across many different car models are widespread.