It s a matter of principal as it always is. BMW go to great lengths advertising their vehicles as superior products. They should thus expect to be held to their own marketing standards and their historical reputation.
The fact that owners notice even what some may describe as a non issue (so far) is excellent and reminds the brand and the industry that the owner is not a blind to ANY quality issues. Yes, this is an issue that should be brought to the attention of dealerships and BMW. Not ignored lol. To those recommending igoring rust lol imagine what else will occur down the road if BMW quality assumes the customer wont complain or notice
On the other hand production run problems can occur these things happen. It is how the brand repairs the error and treats the customer. Extra candies for koreans