I agree to an extent.

Paying fines and/or avoiding jail (within the system) are not free as in beer. Likewise, leaving the country and relocating is also not free (e.g. there's a few to renounce US citizenship).

Whether we're free as in speech to withdraw consent from the social contract (by which I do not mean to speak to its validity or lack thereof) is more of a grey area. As with freedom of speech, the freedom to withdraw from the social contract is not without its (ominous) ramifications. See, e.g. Aaron Swartz.