First: actually, everyone is talking about gender and race and class, even if they do not choose to mention it explicitly. If you do not include any aspect of the latter into your work, you are making a conscious decision and chose a very specific positioning in terms of race and class, namely that of male white privilege. You are talking about race and gender: you are talking about white men. Surprise! They have a “race” and a gender too, despite being marketed as universal, and you chose to put the focus on them yet again.
Good, challenging text on (the lack of) intersectionality, especially in academics and activism. Do read it in full, it’s well worth it.