Many of the people pushing for these new rules are Christian Nationalists, and explicitly reject the separation of church and state. Some pastors are getting in trouble with their congregation if they try to remove an American flag from the podium, for example. It also fits in neatly with the Trump Bible that he released recently, which included a copy of the constitution, pretty explicitly rejecting the Christian belief of not adding or removing anything to the Word of God.
But this hypocrisy has been a core part of American culture since its founding, check out the book Money Cult to trace the origins and see more about how church is essentially big business in many of these states.
[1] The Money Cult: Capitalism, Christianity, and the Unmaking of the American Dream
[2] https://www.threads.net/@revjsreeder/post/C8W9cR8O1sg/?xmt=A...