I can understand your disappointment, but why don't you do as they ask and send it to them?
No point in venting here, enclosing a polite letter inside the kit, will do much better.
And while Moebius car kits today, due to the tool design, may look "sprue layout wise" a bit odd , which might have caused the packaging errors you addressed.
I'm sure from constructive customer feedback, they I'm sure, in the future will adapt to a more streamlined, packaging friendly and dummy proof, tool design.
;^)
Anyway looking forward to their next batch of automotive kits....