I could just as easily say that whenever one argues with a non-libertarian, he or she lays out an endless series of straw men.

See how that works? "Your argument doesn't accurately represent my viewpoint" is what both No True Scotsman and straw men are about. So rather than opting out of an argument by calling "logical fallacy" on someone, why not clear up the definitions and be sure of what each other are talking about?