Not to speak for DanJ, but many people confuse aethiests with "proselytizing aeitheists." Ideally, IMO, peoples religious beliefs should not be directly available. I do not think that the nature of god or whether a god exists is a proper sphere of concern for government. I also think that the particular phrasing of religious text has some serious (well, at least, not inconsequential) ramifications. Well before the famed Christian "Do unto others as you would have them do unto you." came "Do not do to others what you do not want done to you." [This statement to get rid of the "Hey, I'm just posting the Ten Commandments" bvllshit.]
There is a large philosophical difference between these two similar statements. The government can legislate what it wants
and needs, but it should stay completely out of other realms. I can persecute the unbelievers without official government permission.
