I mean, the anarcho-capitalists are fairly extreme, but the libertarians in general seem to be people who want to lock in the benefits they've got in the current system and remove any barriers to fucking over people who don't have them. They also seem to forget that you can't just declare that coercive force no longer exists. The best you can do is try to have some sort of consensus to apply it fairly and sparingly and in the pursuit of noble ends. All of their proposals are just variations on directing the thrust of that power to enforce the status quo when it comes to property holders.
The crazy thing is I'm not even particularly ideological, and I imagine our friends on the .ml domains would not be fans of me. I am just in favor of measures to moderate the worst tendencies of capitalism and to preserve the fact that no one succeeds in a vacuum, things like paying my fair share so people can have safety and opportunity. The Libertarians are just not what they claim to be, either because they're evil or naive.