Payments made after September 30, 1991, under sections 19b(2), 19c(2), 19d(2), 19e(2), and 19f(3) are not pensions, annuities, retirement allowances, optional benefits, or any other rights described in section 40(1), are not exempt from taxation, are subject to execution, garnishment, attachment, the operation of bankruptcy or insolvency laws, or other process of law, and may be assignable as provided in this act.