Because intersectionality[1] is something that needs to be acknowledged. Given the target audience, the proper paragraph about the flaws of the model and how it doesn't address intersectional issues probably wouldn't have gone down well. This small comment, however, ensured that at least some mention was made.

[1] Intersectionality is the idea that different combinations of minority issues will have their own, often unique, challenges. In the video games difficulty setting analogy, think of intersectionality being the advanced mode with lots of little sliders for different things, rather than one scale of easy to hard.