Only a licensed nursing home administrator may manage, supervise, or be generally in charge of a nursing home. The care provided by a nursing home or a licensed hospital providing nursing home care through the use of skilled nursing beds or intermediate care beds shall be supervised by a licensed nursing home administrator or by a person exempted from licensure requirements under this section. This section does not apply to persons engaged on July 1, 1980, in managing or administering an Alaska Pioneers’ Home or a hospital with skilled nursing beds or intermediate care beds.