Yes, I quote Spooner frequently. Some of my personal favorite quotes come from him. I wrote a post on that just a few days ago actually.
Yes, the Sovereign Citizens still miss the point about government. Yet, it is interesting to see within the government the TWO versions of it that seem to exist.
Also you and I deciding Anarcho Capitalism is how we are going to live starting right now does not stop them from throwing us into jail, seizing our homes, etc. So while that is our desired destination (Ancap) we still have to protect ourselves from the negatives of reality/system that is around us.
We can hopefully educate more people though and every step is closer to achieving that goal.
If we were to do away with government TODAY and say Let's be Anarcho Capitalists... it'd work for you, myself, and some others, but the vast majority of the population does not have the critical thinking or awareness for it. We'd end up with the CHAOS they like to pretend Anarchy means simply because the population was not prepared to be self responsible individuals, and did not understand the Non-Aggression Principle.
So my personal goal is to attack it from the critical thinking angle. I'll try to get more people using critical thinking that they don't teach in schools and then at least more and more of them will have the necessary mental tools for the things we believe will work to actually be achievable.
It is a long term goal. I realistically think it would take several generations to be completely ready.