Then why is it every libertarian talks about the constitution? The LP presidential candidate was a constitutional scholar.
Now you are changing the subject. You of course have no way to even come close to knowing what every libertarian talks about. I do not doubt you that the ones you have heard all talked about the constitution. Where as very few of the ones I've heard, ever talked about the constitution. As far as the LP presidential candidate being a constitutional scholar goes, the one before him was an author. So what?
Neither of them are the standard definers for the LP. This is because the LP is a Party of Principle, that lays its foundation in an idea and not human being. Read your Statement of Principles for defining what a Libertarian is.