Flying Blue says the same thing (not transferable on death).
1.3.3 The account and the Miles earned by the Member concerned, cannot under any circumstances be transferred, bequeathed, assigned, sold or combined, whether or not for valuable consideration, with the account of the Miles of any other person, whether or not that person is a Member of the Programme, or with any other account belonging to the Member, except as otherwise laid down in provisions notified to the Member.
I know some say this but nonetheless permit transfer (or use by another) after death, but I have never heard of Flying Blue allowing it.