First no teacher should be encouraged to treat students differently based on the race and that is what you do when you say special effort needs to be focused on "the historically underserved" and you convince yourself that race is the only factor in that equation. The largest group of poor in this county is still white children and many of them will be going to school in inner cities where teachers are being taught that the whiteness is the problem.
For a mathematician her logic is deeply flawed. She does nothing to support her argument that math is race based or intrinsically political. She simply makes that claim and comes to "logical" conclusions based on treating her unsupported assertions as truth. Sorry but bringing up the uncertainties of theoretical math is irrelevant since that isn't really taught even at the graduate level in anything but a pure math degree. The math taught at the high school doesn't even come close. Her assertion that math is seen as the ultimate indicator of intelligence is grossly overstated and simplistic. Yes people who excel at math are considered intelligent but so are people who excel law or medicine or even writing. It is true there is not a great deal of respect for the social sciences but that is easily justified by the simple fact that so few of them deserve it.
Teachers should fight to make sure they have the best tools to educate their children and prepare them to enter the world but race should not be factor in that. Her problem is the wears brown tinted glassed and can only see the world through skin color.