Yes, and therein lies the rub. All of the tax accountant and lawyer sympathizers conveniently ignore this little tid bit of freedom. Although I don't buy into the lower wages mantra, I would gladly take a pay cut to exercise the freedom of voluntary taxes.
Apparently, real freedom is not all that important to conservatives (There does seem to be a lot of interest by Americans, though). The ability to tell the government that YOU are not going to fund its latest folly must scare the crap out of conservatives and liberals alike.