Earlier quoted context omitted.
If you pay taxes, you "support" the entire government. That doesn't mean that you are in favor of all of the things that it is doing. If you pay taxes, you are a citizen, not a "customer". These things are not the same.
Taxes are not voluntary. I pay taxes for the sole reason that I do not support armed men coming to my house to jail me for not paying taxes. They are paid under duress. I do not consent.
You may work outside of the system.