It crosses the state/church line. If it said "yay satanists" or "yay wood pagans", I would have just as much of a problem, but somehow I doubt the government would consider such nonsense. The bill goes so far as to establish Christianity's "superiority", despite my feelings to the contrary. Government should keep their nose out of business in which their nose does not belong.
You know, what if it said, "yay for publicly-schooled individuals"? Or "yay for people who touch themselves at night"? Or "yay for homosexuals"? Or "yay for people who eat omnivorously but secretly think the vegans are right"? "Yay for luddites"? "Yay for civil war battle recreationists"?
You know, it's like posts from moderators stating imperatives (like "GTFO" or "STFU" or whatnot) are somehow perceived differently than posts from non-moderating members stating imperatives. Having the government involved is the problem -- I have no problem with individuals or even organized institutions such as churches saying "yay christians" (after all, someone has to -- I certainly won't).
It is part of the problem, not part of the solution.