They forgot one very important thing. First, they want to crash the system. They did that. Next, they want to rebuild the system in their own image. That means cooperative slaves. What if the slavers don't cooperate? No tax revenue, no rebuilding. They're counting the the right wing to be patriotic and work to save the nation - again.
What if we decide living off the grid is better than living under their oppression? Who will make their bread? Who will pay for the reconstruction? Who will do their labor?
Isn’t it obvious? First they will use the power of persuasion...then the persuasion of power.
See last chapters of Atlas Shrugged.