In short there is no abandonment. That is just used to scare people away by opponents of real school accountability. The race question is an important one because school choice was used in the 1950s-1960s as a white escape. However, after some time in the South exploring this issue and learning about various opinions it s important to realize that the conditions are different today. Most poor minorities are NOT being served by public education nor by various equity schemes that overlook the academic component in favor of demographic balance.
Many minorities favor school choice, especially younger ones.
They feel it s about choice, not race. But more to your point, these plans utilize open enrollment provisions and generally target minority students that are not being served. The Maine Supreme Court ruled that the ban on religious schools is not unconstitutional, but did not say whether the inclusion of religious schools would be unconstitutional. The decision does not support the right of parents to send their children to a religious institution and receive a tuition reimbursement. While the decision is unfortunate for Maine school choice and the families seeking the best education for their children, it does not speak to the separation of church and state.