Nice mount.
The current (iPhone 12 & 13) have the MagSafe magnet ring on the back which gives the combination of power at up to 15w (USB C cig lighter and good cable) as well as the slap to attach mount. In the MB and Aero I have found these to be strong enough to hold so far. I have the iPhone 12 Max (big one) Pro which is about the heaviest in the apple transparent ploy case with the mag rings.
With the head unit I am probably similar to you, it is more about the volume control (for the co-pilot as much as me) and not looking totally out of it in the lovely dash I guess.
