To obey such a law means Christian organizations would have to hire open satanists and witches.
Such laws are indeed flatly unconstitutional, but the Supreme Court, aka Supreme Legislature, disagrees. Freedom of association, freedom of religion, and private property rights were lost long ago, all in the cause of ending discrimination.
A leftist would probably say that’s a good thing. In practice, it pretty much works only one way, because what Christian wants to work in immoral places, like gay bars? Homosexuals, on the other hand, seem irrationallly drawn to church. Maybe they think that if they infiltrate enough, they can force God to change His mind about sexual perversion?
They could say that the exhibit has an evangelical purpose.