That was precisely the question. Unless the Almighty Himself comes down and runs the show Himself, this country will be run by men. And, don't say Biblical law is absolute, because we know people pick and choose which laws their particular denominations will follow. Very few Christians keep the Sabbath (Saturday) holy; most don't eat only the clean foods, or prepare them as prescribed. I'm sure nearly all own clothes made from more than one fabric.
The folks running the show in this proposed theonomy will have their own particular pet laws, and their own particular interpretations of those laws.
In other words, the show will still be run by men, not God.