You asked for a citation. That's the original position of the goal post. When you were provided with multiple citations, you decided that wasn't good enough, an

You asked for a citation. That's the original position of the goal post. When you were provided with multiple citations, you decided that wasn't good enough, and so started complaining about the veracity of studies in general and finished by ignoring those citations and claiming "vagueness." That's the second position of the goal post. Those two positions are different. Therefor, the goal post has moved. Your response was filled with bitterness, like someone who was flustered at having been proved wrong. It sounded just like a child crossing their arms and yelling, "Well citations are stupid anyway!"