What you are doing is not debating, it is stubbornly refusing to acknowledge the obvious, which you hope to make go away by assigning it a different term. Instead of lack of enthusiasm let's call it "shock" and "boredom." That is what my eight-year old does when he gets called out for something; his mentality is that if he can succeed in defining something in a different way then it didn't happen. And that is why I described your response as petulant.