Yeah, kind of. A Christian Society does not mean a society full of righteous Christians nor even one that still acts superficially as Christians should. Religion provides the standard, the background against which actions are measured. Not everyone lives to the standard and as we push religion further away from the center it takes more and pettier laws to maintain the society.
Those who reject the 10 Commandments are then bound by the 10,000 commandments.
(a great man said something like that, I'll have to check who it was and exactly how he said it!)