My response:
This is very true.
The CC company has their own contract with you and your ex. They are not a party to your Property Settlement Agreement and Order. Your Property Settlement Agreement and Order is only between you and your ex.
All they know, or care about, is that the contract you and your ex signed says that you or your ex will be responsible and liable for the debt.
The CC company can attempt collections from either or both of you. They can sue either or both of you, and your Settlement Agreement and Order is not a defense.
Good luck to you.
IAAL