Of course he reiterated its meaning; whether the Yangs understood it or not, the words--as read--do not say, "Yangs only, damn it"!"
"We the people of The United States of America"=Yangs.
And in your own post you admit that Kirk interfered with the destinations of two civilizations. Whether he "merely" or he "simply"...he did it.
Maybe Kirk would like to hang around and "Merely" point out the hypocrisies in their Bible too. Maybe he should "simply" point out their is no empirical proof for their God.