I agree to 100 %. But hopefully the effect of beeing blinded will not occure that often in a two metre high vehicle as it occurs in your Mercedes.I'm afraid the poor rear visibility won't stop others from blinding me. So a self dimming mirror still makes sense. And I'd even like to have them as side mirrors.
Self dimming mirrors are imo the best convenience option I've ever seen. They stay invisible as you don't simply notice them. The silently do their job, don't talk to you end never ask for attention. This is one of the features you won't miss until it's gone.