You are right. The service advisor may have been thinking of an '07. But it's more likely he was thinking $$$.
Pretty complicated huh? LOL!
Look at it this way, these cars had to be designed to be maintained in 3rd world countries where advanced tooling and complicated repairs cannot be performed. Routine servicing often requires at most a basic set of tools plus the occasional specialty bit ie Torx etc.
I know, I am currently in one of them countries and there are MB's all over the place!