Of course libertarianism is not liberalism
Actually, some libertarians prefer the term: "classic liberalism".
The modifier is used distinguish it from "social liberalism", which developed later:
In the US, "liberalism" is used to describe a mix of social liberalism and progressivism.
It's why I refuse to use "liberal" at all. The original meaning of the term has been corrupted to the point that there's nothing "liberal" about it at all. And it certainly isn't "progress", either.
I just use "the left" or "leftists".
No-—Libertarianism is usually the most irrational of all because they claim there is no Objective, Universal Truth (a God). Or if they do, they say that “religions” are irrational-—all “faith” is irrational, yet, the idea that faith and reason is separated in ANY “human” being is a Joke—total irrationality of Marxism-—that Marxism isn’t just an irrational faith (a religion) in masters over a bunch of slaves.
So Libertarians ban Christianity from the public square and our “Justice” system when it MADE the Justice System and Western Civilization and eliminated the pagan and socialist concepts that democracy (tyranny of majorities) is “Good” and acceptable over Individual NATURAL Rights from God.
Justice is the Queen of Virtue in Western Civilization. Virtue is Excellence and to “Progress” there has to be an IDEAL—(God/Universal Truth), so that you go toward Excellence (the High Renaissance was ONLY possible with a Christian worldview).
Why? Because the Virtues of Faith, Hope and Charity and the idea of Free Will (choice) and Individualism/Natural Rights from God only and never the State, are purely Christian concepts—as is the US Constitution and the “Justice” (virtue) System.
All Just Laws promote “public virtue” (Montesquieu) and the Libertarians actually believe that Just Laws can promote vice (and evil and sodomy and baby-killing). Using any human being as a Means (object) to an End is evil-—but only in a Christian “Justice” system and the US Constitution.
True “Justice” systems can never promote evil, theft (Marxism/Socialism) and ideologies like islam where some groups are treated as objects/Means to an End which is ALWAYS EVIL.
Read my tagline-—that is a Catholic concept which became Universal in the Western Worldview during the Scholastic period which ended up creating the Renaissance and worldview of John Locke, Adam Smith, etc., which created the Minds of our Founders (the US Constitution).
Ideas matter. The most just, free, perfect “Justice” System has always been the ones based on a Christian Worldview—the Christian concepts of “Good and Evil” which created the idea of Free Will and Individualism which is the basis of true Freedom. Remove Christianity (the faith/belief system)-—and you remove Freedom, period.
That is the WHOLE object of Marxists—to destroy the Christian Worldview in children so they become ‘happy slaves”-—have no concept of Justice/Freedom and the ideas which created the US Constitution.
Without Knowledge and Wisdom, the concepts of the Founders are impossible. That is why Common Core removes the Great Books or warps them so that critical thinking is impossible in children.....there is “nothing” in their minds worth contemplating-—just mush and incoherent worthless (lies) information which promotes vice and using others in evil, vile ways (Marxism/islam/satanism).