The school is already about 25% white in a country that is ~60% white. Is that sufficiently diverse? What is the optimal amount of diversity and why? There are a lot of questions I could ask. But I think it's interesting that schools have announced so strong a commitment to diversity without really explaining what diversity is or how having certain racial demographics results in the best possible outcome. How would you prove that?
I don't think this ruling will have any effect. The schools are pretty clearly committed to diversity, whatever that means and for whatever their reasons may be.