It would be incredibly naive to suggest that only the rear brake ducts were copied, that’s simply all other teams can prove. Frankly suggesting otherwise would lead me to believe the sun has got to someone’s head!
In all seriousness, we all know that far more of that car is copied. Maybe drawings for other parts weren’t “officially” handed over but clearly there’s foul play. If you know anything about composite manufacture then you know it’s impossible to copy parts simply by looking at pictures. Especially in such a short time scale. It takes years to hone such things, unless you have a helping hand.