I don't know if that's entirely fair. France is staunchly secular, more so than most of its European counterparts. I could be wrong, but I don't think you can wear a crucifix or other religious symbol in French schools either.
France is about as catholic as it gets when it comes to who actually runs the show.
I will agree though that France has also been very reactionary towards its Muslim population and laicity has been a convenient tool to bash them. But that doesn't invalidate the purpose of the original principle.