Yeah, that's the "Rogue" position I mention in my outline. And all-too-often even the most peaceful anarchists are portrayed this way by the media.
Voluntaryism certainly works, perhaps better in a lot of cases. I tend to worry less about terms and focus more about ideas. I think this is where meeting them where they are really comes to play. If they want to define the terms, I let them. I might offer an alternative, but my desire is more to help them think than to make sure they're following my definitions. If I can help them think about things differently, then I'm accomplishing the goal.