None of this means the F30 isn't safe. It just means that the IIHS has identified a crash type that is increasing in frequency (and they are paying $$$$ out in damages).
The more distractions to driving, the more of these types of crashes. I would argue the availability of lane departure/blind technology, voice command improvements, and the iDrive screen being so high on the dash put the 3-series high on the accident avoidance list. However, it appears most manufacturers need to follow Volvo's lead and better tie the outer/front passenger compartment to the front structure.