This. I've got no problem with being the one doing the cucking. On the contrary: Breaking the rules and going wild against societal norms is right up my alley and playing a woman in a patriarchial society offers much more potential for that. It also helps that many games that offer this route the male character who's getting cucked is usually designed in a way that creates little sympathy. Think of the stereotypical boyfriend who's a constant fuck-up and/or too dense to recognise his partner's needs and dissatisfaction.
As for the QoS-fetish: I've got nothing against fetishes going against the few rules that should never be broken, like "do not act without your partner's consent" or "don't be a bloody racist", as long as they remain in the realm of fantasy. The QoS-fetish has inherent elements of racism and the whole thing needs to be well written for it not to drift of into the realm of blatantly racist stereotypes. And even then a person of colour might still find it offensive because of different backgrounds and sensitivities. Any writer going into that direction is walking on thin ice and many results are too offensive even for me as a white dude.
Keep in mind this is coming from a non-White and also a non-Black dude (oh wow there are other races? Somehow they rarely get portrayed in racial focused NTR though. . . because its not entirely a fetish).
Anyways, got side tracked, I essentially just wanted to state that the racial stereotypes play into a lot of the fetish for people, in that there is cuckolding that some can enjoy without race play, and others who enjoy it much more with. Some people are racist, and it sucks, but not everyone is. I will say that as an Indian, I by no means get offended when people portray us as in IT or in the medical field. . . I literally do IT for a living, its just a fact that a lot of these stereotypes are based off of what is seen often. Unless the portrayal of something is intended to be an insult, I think its perfectly fine to otherwise let it slide.
And as a side note, I personally love Queen of Spades cuckolding content. Regular cuckolding as a result just isn't a turn on unless there's another caveat to it, like the bull is a close friend, a hated enemy, family, fat, old, etc.
Essentially what I just wanted to say is that its not entirely racist if the "thug" in a game is Black. Doesn't mean that the dev thinks all Black guys are thugs, nor does it mean that they think all thugs are Black. But its a common trope in real life, enough for it to be a stereotype.