It works 2 ways though. The safe way and and the really not safe way. If an aircraft in overloaded in a hold etc or simply does not trim. If the movement of bags around the aircraft / pax around the aircraft does not solve the issue. The bags / cargo can be removed. The pax can travel without bags but not bags without pax.
It goes from being an inconvenience for the passenger and a cost for delivery and some extra security checks of the bags to being (although not in this case) rather dangerous.