It all starts with one man saying no. Morality, true morality sometimes has a cost that only the truly righteous are willing to pay.
That is assuming that he is correct, and I just don't think he is.
But really, what does anybody think is going to happen? That the government is just going to say "woops, you got us, we won't continue collecting income taxes?"
Even if the Supreme Court said "yes, individuals don't have to pay taxes because of (insert tax protester reason), don't you think that congress would just spell it out precisely the next day?
Pretending that we don't have to pay taxes, and getting good peoples lives ruined by encouraging them not to pay taxes, is simple not productive. It does not bring us closer to repealing the income tax.