EDIT: If you don't vote, you're a fucking retard. You're not 'defying the system', you're purposefully silencing yourself.
Leaving the ad hom aside, I think there is a very fundamental way in which a person who doesn't vote is "defying the system". If the system is "let's all vote on what policy to impose on everyone" and some people stop voting well then clearly they are defying the system. So I think you're having trouble identifying what system it is we're talking about here.
Also, you are missing the point:
- The message is that voting is pointless and will not achieve freedom, because the very problem is with people's mindsets, not just the existence of the state's buildings and guns. There are people who feel they are entitled to other peoples money/time/effort and until this mindset is changed, there can be no improvement.
- The chance that your vote changes the outcome is miniscule
- Voting is a false dichotomy, between left and right. It's like when a salesman says, "So do you want to buy 10 or 20?", he is excluding the choice of 0, in case you don't want to buy any. No matter who I vote for, the state always gets in.
There is no way to achieve a viable anarchocapitalist state aside from democratic means.
Incorrect, there are non-democratic ways of moving towards ACism.
Agorism - Via counter economics and performing free market transactions without regard to the state's "licensing laws" etc, taxation, regulation and just doing business off the books, agorists are undermining the state's stranglehold over the economy. Eventually, government would become irrelevant under this system because the "real economy" production would eventually far outstrip the pace at which the state is able to control it. There are incentives to doing this because right now the state taxes many many things, from income, to production, and also you lose money to inflation when the state prints money. So by working outside of that system and using sound money, you stand to make a lot more money and you have more flexibility to produce things that people in the market demand.
Secession - A bunch of market anarchists could get together, go buy up some land where government influence is weak and begin a free market stateless society. Once enough people have seen it work, they'll realise that so much of the current state's taxation is just wasted and just goes towards people who spent the most money lobbying for an issue, not those issues which actually need attention.
Talking to people about the issue can also help, it took time for people to come to realise that slavery was wrong. But surely ridiculing the idea and by talking about it, that helped the change towards the idea that slavery is wrong. Likewise, if enough people thought non consensual governments were wrong, well then maybe there will be a day in the future where there would just be mass individual secession and the government would just not exist.