Yes, but I wouldn't class that as building in a backdoor to a specific "major piece of software and hardware" or software and hardware range, I would class it a

Yes, but I wouldn't class that as building in a backdoor to a specific "major piece of software and hardware" or software and hardware range, I would class it as industrial sabotage on a more subtle and general scale. Equally pernicious but not the claim that is being made.