I'd like to imagine that an engineer or designer got burned for pointing out issue with the CT, and after that they decided to just "yes man" Elon.

Wanna tow stuff with it, but also have a cast Aluminum frame? Sure thing!

You want capacitive sensors on the exterior of the vehicle? GENIUS!

Reduce weakpoints in the frame by not putting in drain holes? We won't worry about rust because it's made of stainless steel and aluminum? Eureka!