On the other hand, there is a theory that the hypothesis that the foreign enemy denied worship of dotaku and forced its local subordinates to abandon dotaku can explain the facts: that some dotaku were found broken, that worship of dotaku rapidly declined in the third century, and that the purpose have not been passed down at all.
また、その外敵が銅鐸祭祀を否定する集団で、支配下に置いた地域の住民に銅鐸祭祀を放棄させたと考えれば、銅鐸が壊れた状態で出土することや、三世紀に急速に銅鐸祭祀が廃れたこと、銅鐸の用途が全く伝わっていないことなどに説明が付くという説もある。