This can be said about any problem in any car, "one of their suppliers f'ed up" because most things in a car are manufactured by suppliers today. Car manufacturers only assemble sub systems from 3rd parties.
How comes if Ford f'ed up, it's Ford. If Toyota f'ed up, it's Toyota. If Tesla f'ed up (doors, brakes) it's a supplier?
How comes if Ford f'ed up, it's Ford. If Toyota f'ed up, it's Toyota. If Tesla f'ed up (doors, brakes) it's a supplier?