cannabineer
Ursus marijanus
No. He started with a broken premise that you tirelessly flog.A wise person evaluates ideas and proceeds from there. Lysander Spooner, an 1800s abolitionist among other things, got a lot right. That doesn't mean I endorse everything he ever said or did. For instance we have different views on intellectual property.
Also, there is nothing in a Voluntaryist world that would prevent people from cooperating on common defense. What might suffer is empire, like the one you live under now, the most destructive of liberty and war mongering the world has ever known.
A voluntaryist society would be incapable of making a modern round of ammunition. That requires inter alia a chemical industry, which cannot be had when society is the herd of cats about which he dreamt.