A president who is not willing to compromise with Congress or the electorate won't get anything done, he'll be utterly hogtied. And the majority do not support Libertarian beliefs, not Gary Johnson's, not Ron Paul's. Johnson, as you said, would compromise. It's the only chance he would have of getting anything done at all. Both are hypothetical, since neither can be elected.
As to why Ron Paul is Nutsy Fagin, the reasons go on and on. Take any example. Like the one where he stated on the Daily Show that if there was no government regulation of business, they would not pollute. Because in a Libertarian government, the citizens would not permit it. Only business in collusion with government will pollute; business left entirely to its own devices will never pollute. He also stated that one individual can only make bad choices that affect himself, his choices can never affect anyone else. Really? So if I decide to shoot up the neighborhood, that only affects me? Interesting. Oh wait, I mean CRAZY.
