Is there really something broken?

Hi all together, last week at the Swiss TÜV the condition of the axle housing was contested, it is just not tight anymore. I was surprised, because just in winter the car was to the Assyst at Mercedes. I then made contact with this Mercedes workshop, which looked at the photos internally and also with KÜS and Dekra. Everyone comes to the conclusion that there is everything normal and tiptop. The Swiss TÜV imposed a repair obligation in self-responsibility. But I do not want to repair where there is nothing to repair. Pictures attached. What do you think about it? Defect or everything normal? Thank you. Dear Greetings (W463, G500, 2009)