I am actually the world's foremost expert on what I mean when I say something. If we ever have a debate about what I meant, then I am 100% correct and you are 100% incorrect. When I do helpfully clarify something for you, that's not "walking back" anything. There is no debate to be had here. You can ask me to clarify something, but only I know what I meant.

Quoting somebody's words back to them as if to say, "but but but you said this!" is basically never useful, because you're always talking to the preeminent scholar on what that person meant and you should only ever be in the posture of accepting what they tell you they meant by those words.

If there appears to be some confusion about what I meant, then I am, as one former president so eloquently put it, "the decider."