I waited a bit with commenting on your post, but if I am being perfectly honest I think you should have been treated differently.
In your pre-op x-ray I can see very narrow airways (increased risk for sleep apnea) and a somewhat steep occlusal plane, both of which are indicators for a downward and backward rotated face (clockwise).
Post-OP, your airways are still narrow, the occlusal plane was left steep which results in a convex facial profile even though both jaws were advanced.
The surgeon then tried to camouflage the profile with a straight advancement genioplasty which would have been completely unecessary if he had performed CCW Rotation of both your jaws.
Given that you had a Bimax surgery, this should have been the way to go in the first place.
Your bite is good, no doubt about that, but your surgeon forgot about the airways and the face.
All in all it's an okay result - the bite was fixed. But considering how stressful the entire braces / jaw surgery journey is, I think your surgeon came up short.