There was a theory that the Eiyutan (a story told to describe a hero's success) of Yamatanoorochi's extermination was a symbol to subjugate the clever Santetsumin (people who had technology for iron-making), and many people believed that attaining the Ama no Murakumo no Tsurugi Sword was symbolic of that.
ヤマタノオロチ退治の英雄譚は優秀な産鉄民を平定した象徴と見る説も根強く、天叢雲剣の取得はその象徴であるとの解釈も多い。