I discovered that Apple made a change to the Purchase Sharing payment options recently. According to the senior agent that I spoke with, this change gives control to the family member and NOT the family organizer as to whether or not to use the organizer's preferred payment method. So, instead of me adding a person to my "family" and allowing them to share my purchases, I cannot restrict their use of my payment method for App Store purchases. They alone can opt to use my credit card or add one of their own.
That is just messed up.
That is just messed up.