Earlier quoted context omitted.
I think it's a decent argument, maybe it doesn't apply to your specific flavor of libertarianism since you believe the state should "ensure a non-coercive society" but the devil is in the details with regard to what one considers coercive.
Do you truly believe that libertarians, of which there are millions in the US, want to return to a feudal society ? This is what you actually think? It’s completely absurd
No, not a literal feudal structure as it was implemented in medieval europe, but a system with some similar qualities. In particular, a system where the landed elite control private paramilitary forces and the common folk have no choice but to pay homage to their capital lords or find themselves without the protection of a state.