Logical functions are open to any variables A, B, C ... There is no need for a membership card.You still get inclusion only in terms of inclusion XOR exclusion, which is a local-only reasoning of Membership concept.
Non-local (NXOR) Membership is essentially different then Local (XOR) Membership, which is a notion that you can't grasp, exactly because you get things only in terms of Local-only reasoning.
How can anyone get something that you just invented?