It seems to me that the Buddha frequently provided advice or established new rules of conduct on certain more unusual matters only after certain disputes, complaints or questions were brought to his attention, e.g. establishing the rule about bikkhhus being allowed to look after their parents after it was brought to the Buddha’s attention about a bikkhhu giving food from his alms-bowl to his beggar parents.
If the Buddha were alive today and posed this question, I wonder how He would exhort his followers to act?