No, they are not simply a tool

RIGHT-WING LIBERTARIANISM is one of the most powerful ideological forces of United States of America…

And what is this force?

Settler colonialism or manifest destiny…

It’s wrong to attack a country that respects (or even tries to respect) individual rights. If you do, you’re an aggressor and are morally wrong. But if a “country” does not protect rights—if a group of tribesmen are the slaves of their tribal chief—why should you respect the “rights” that they don’t have or respect? The same is true for a dictatorship. The citizens in it have individual rights, but the country has no rights and so anyone has the right to invade it, because rights are not recognized in that country; and no individual or country can have its cake and eat it too—that is, you can’t claim one should respect the “rights” of Indians, when they had no concept of rights and no respect for rights. But let’s suppose they were all beautifully innocent savages—which they certainly were not. What were they fighting for, in opposing the white man on this continent? For their wish to continue a primitive existence; for their “right” to keep part of the earth untouched—to keep everybody out so they could live like animals or cavemen. Any European who brought with him an element of civilization had the right to take over this continent, and it’s great that some of them did

Ayn Rand, major purveyor of Right-Libertarianism

“One gratifying aspect of our rise to some prominence is that, for the first time in my memory, we, ‘our side,’ had captured a crucial word from the enemy . . . ‘Libertarians’ . . . had long been simply a polite word for left-wing anarchists, that is for anti-private property anarchists, either of the communist or syndicalist variety. But now we had taken it over…”

• Murray Rothbard

Why is it a surprise?