Indeed that may be true. But it's still pretty pitiful that they only let you apply your discount to $1000 worth of products a year. That means you save.. $100 each year!
There is no veil here, and no reason to pretend there is something legitimate preventing Amazon from treating people like human beings. I'm not going to argue with you, unless you tell me you've worked there. Then at least I will attempt to understand why you believed such treatment is acceptable.