I think the big assumption/fallacy is that electing a libertarian president or few congress folk will tear the fragile system asunder. When we just want to win a few battles to turn the tide against ever increasing size of government, domestic surveillance, police statism, taxes, and people who want to silence us and others like the regressive left.
If you were a true libertarian, you would call out right wingers as well for trying to restrict voting rights, tightening immigration laws, marijuana, abortion rights, LGBT rights, and many others.
Police statism and military are favored by far more by right wingers btw. One of right wingers most important values are patriotism and national security after all.