You won't get any argument from me on that one. Zwingly tried a theocracy in Zurich during the Reformation. It was a disaster. Any theocratic government is doomed to failure. My assertion is that posting a religious document on public property does not equal a theocracy.
The posting of the Ten Commandments in an Alabama courthouse does not a theocracy make. Quit swooning and hyperventilating.
And if you want to find truly world-class disasters in goverment, you need look no further than the officially atheist states--any of them: the late unlamented Soviet Union, the People's Republic of China, Hoxha's Albania, Pol Pot's Cambodia etc. For some reason mass-murder-by-government and atheism gp together like peanut butter and jelly.
Atheist libertarians exercise curiously selective judgment when it comes to America's past. They recall with great fondness and seek to return to the days when Americans could smoke opium to their hearts' content but shrink in horror over the prosepct of a 19th Century America when Judeo-Christian tradions and prayers filled out courthouses, government halls, and other public fora. You call that a theocracy. I call that a strong, vigorous nation whose traditions were rooted in Judeo-Christian beliefs and practices. Tocqueville certainly described it that way.