Any gatekeeper provisions must be reasonable in relation to the benefits promised in the contract. It must be demonstrated to the satisfaction of the commissioner that a reasonable number of insureds who can be expected to receive benefit or contract payments because of an illness, injury or condition, are not precluded by the gatekeeper from receiving said benefits. Policies or contracts providing long-term care benefits following institutionalization shall not condition such benefits upon admission to the long-term care facility within a period of fewer than thirty days after discharge from the institution.