Besides Musk…it’s the fact they are still using the same design from 10+ years ago. When I see a tesla, I can’t tell the difference between the S & 3 or the X & Y. They made one car and scaled it in their software. All 4 cars are due for a redesign and they don’t need to all look identical. And they need to figure out how to actually assemble them without being shit.
It won’t be hard to find the planes these parts are associated with. Aerospace is hardcore about traceability. It’s not like people flying need to be worrying about the plane they are on.