What the Court has done in Carson v. Makin is a substantial step further. They’ve demanded that states providing any sort of choice or flexibility in their school systems must offer comparable support for religious indoctrination in place of some of that education. They’re requiring tax dollars designated for preparing young people to function competently in a modern, diverse, complex world, be redirected to teach homophobia, science denial, sexism, misogyny, alternative history, or whatever else might be trending that week in right-wing curriculums.