You can run down the policies of either major party and find topics where they advocate against government intervention, or at least a light touch. So the idea that we could have less government intervention isn't really a unique or rare one.

It's not a matter of imagining some "truly libertarian" government, as that is an artifact of US "Libertarianism" which is itself fallacious (it mostly just renames "government" to "corporations"). It's a matter of which ideals to strive towards.