The Libertarian Loophole is exemplified by their position on public transportation, they don't oppose public transportation they just don't want the government doing it - let the free market provide it if the public want it! Except, of course, the free market demands a quick high return. Railways by their very nature are a long term low yield investment generating a return on a scale of 30-40 years, not by the next financial quarter. Something the public can and will accept for public infrastructure. But not business interests. So what the libertarian argues for is a situation where economic strictures ensure it will not happen but they can insist they do not oppose it.
Libertarians also want to move away from an expansionary monetary policy which is literally the glue that holds our entire modern capitalist society together.
These folks are just nuts. They essentially decided that all government is bad and then came up with policy ideas to match that rather than having a politics that seeks to achieve a particular social goal. Even neoliberal capitalism is broadly about maximizing global production. Social democracy maximizes liberty more than rejection of government ffs.