Earlier quoted context omitted.
While I don't think mentioning her by name was necessary (she's just an example of the culture of bad middle management he's calling out), I do think highlighting her race as a meta-criticism does neither the OP nor Banks herself any favors. My rule of thumb: unless given an obvious reason not to, assume good faith on the part of individuals.
Pretending racial disparities doesn't exist (particularly in tech) doesn't do any favors either.
Ultimately we're discussing assuming someone is a racist because they said something negative about a person of a different race. That assumption is also a racial stereotype.