Totally agree.I don't own one and haven't driven one but just listening to the videos I couldn't be persuaded that in the long term that noise isn't going to do some harm. It sounds like wind up and then slippage in the transmission system. MB saying that won't cause premature wear has to be nonsense. How could they know anyway unless they tested one to destruction.
If Mercedes say it is a characteristic, its designed to go this, it is safe, then produce the evidence and demonstrate to your customers its safe, then allow your customers to decide what they would like to do, because I don't recall Mercedes telling anyone that their cars would crab.
So I would like to see:
Engineering and design documents describing this characteristic that was designed into the car and the reasons for it to be implemented.
Internal test and safety documentation.
Independant safety certificates/documents sign by DVSA and other equivalent safety boards.