No one is criticizing your story preferences. You can like whatever you like. But when you criticize a story for being too political when all it did was make the main character female and non-Caucasian in an otherwise bog-standard action plotline (with an admittedly unusual twist to the type of action involved), then you're saying a lot more than just what kind of story you like. Your original comment presented your point of view in opposition to the (dismissively mentioned) complaints of women that it was hard to relate to SF when it was wall-to-wall white males, suggesting that any use of non-white non-male POV was inherently a loss to white males and a gain to The Other. You followed this up by referencing racial inequality as "bungdung" that others are "obsessed" with, which in turn implies that racial inequality is not a serious consideration and does not merit a place in the themes of serious literature. Both of these are deeply problematic assertions, wholly steeped in (likely unrecognized) privilege; that is, as I said, your ability to ignore such facets of life is inherent in your position as a white male who doesn't have to worry about race or gender in your every professional or public interaction. But just because it's not relevant to you doesn't make it a theme unworthy of exploration (even in the flimsy manner here in this story), and part of the benefit of literature as a medium is that it enables one to empathize and understand those who are not precisely like oneself.
Further, I would argue that, whether one enjoys thought-provoking literature or not, suggesting that science fiction, as a genre, ignore it entirely by virtue of saying that none of the serious problems of today will be a problem In The Future is at best a misguided piece of advice. Again, you can feel free to dislike weighty literature for your personal pleasure-reading, but so long as science fiction remains solely about escapism and male power fantasies, it will struggle to maintain any sort of standing as a respectable genre.
I would go on to suggest that learning to engage with deeper themes through the medium of fiction is a useful skill, and in many ways is the primary point of the very act of storytelling, but one cannot criticize others merely for personal preferences.
I will say that this story is hardly obsessed with race nor even very much about race at all; the main characters are multi-ethnic and include a solid mix of male and female, and neither race nor gender is particularly relevant to the story's resolution. (The main character is a dancer, and that skill is what gives her the edge, but dancing is hardly a female-only profession; she could as well have been a he and the story largely unchanged.) Complaining about ethnic/gender concerns in this context makes your tone sound trigger-happy; you appear, by complaining about such a mild intrusion into White/Male Space, to be actively looking for cause to take offense or dismiss. Again, the mere existence of protagonists who aren't white, male, and straight is not "politics." As someone said on the occasion of Julia Pierson as the "first female head of the Secret Service": the battle will be closer to over when we can stop remarking on the event occurring. Once it's no longer "weird" for women to head the secret service - or for non-Caucasian women to be space marines in SF stories - that is when we will be close to equality.