Rothbard was not a politician, and you are completely loosing my comparing his analysis of the Whiskey Rebellion to politicians not supporting anti-GMO bills?
What Rothbard has done with much of his historical righting is attempt to show how certain events look when seen through the lens of "liberty vs. tyranny". That is all he is doing in the case of the Whiskey Rebellion. "Official" history emphasizes the military putting down the uprising, but does not discuss the overriding fact that in many parts of the country, the tax was completely unenforced and, unenforceable.
*Advancing the Ideas of Liberty Daily*