WTF?!... This is an absoluty CLICHÉ (And I must say, quite an old-fashioned cliché.)
No it's rather called "Genre" or "Fetish". Your Argument is like complaining about a Fantasy Game is too cliche and 1937 (Hobbit), because it have Magic, Wizards, Dwarves etc, but than showing off with that, that you are incapable of understanding that the real target audience who enjoy the stuff (so not you if you complain) want to have exactly that.
This story has all the racist stereotypes ... The muscular black man, who sells drugs, is rude and treats all women like whores. Obviously he has a huge dick (You knew this is a myth, right? Not all black men have big dicks) On the other hand the white husband, with a small penis and weak personality and the wife, who thinks it is okay to be degraded and be treated like a whore.
The Problem with woke arguments like this is, that people like you have a hard time to understand that Stories like this (and that goes for alot of Political Correctness Stuff) isn't meant to reflect a whole society and generalize, but rather to show a particular situation of it's world. As example(going into Gaming again): Only because you rescue as Mario Princess Peach, it doesn't mean that Nintendo want to generalize that Woman as a whole are weak and need to be rescued, but only want to tell that one particular princess(trope) which needs to be rescued. To call out Nintendo for being misogyn because they have on particular princess which needs to be rescued, meanwhile the other Princess (Zelda) is a huge part of success in the Series (for most games atleast) and without her Link wouldn't be able to pull off most fights against Ganon(dorf) etc; is pretty wonky. Not to mention that Nintendo created one of the first and strongest Woman in Gaming History (Samus Aran).
So coming back to this Topic:
Games like this in general aren't meant to generalize that Black Dudes have big dongos, are bad ripped people who sells drugs and take away the typical white small pp guy his wife away, but rather to give the target audience their specific kink. Otherwise it wouldn't work out and they might have a way different type of target audience.
I mean a lot of your concern i wouldn't even pin down to the "racial" stuff. If you look at porn in general, i'd argue majority of people enjoy Porn better where the porn actor is a stud with a big penis. And if you look through the NTR Stuff without interracial, i bet majority (atleast western ones, japanese quite often go into "ugly bastard"(their tag-definition not mine) fat guys tropes where they are some kind of uncles, teachers or fathers-in-law or whatever, but they also share in common to have a big/huge dick compared to the partner / husband of the stolen girl) NTR Stories where white dudes steal the wife, they're also ripped, huge, strong and have a big dick. (Big Dick is a common trait for NTR, i've hardly read one where one took away her by his personality or because of his technique). I mean the same goes for Woman with big breasts as well.
So in the End, to sum up my point, you (and some other guys) are unneccessary butthurt over something, which doesn't even really exist... nobody claims that Whites have only small pp and blacks have only huge pp, or that blacks are the bad guys who sells drugs... it's simply the type of content which the target audience want to have for this particular NTR Trope, otherwise there wouldn't be an argument here because they would look elsewhere for a game which fits their Kink / Fetish....
So to throw a racist tantrum around isn't helpfull and kinda bothering... and it kinda shows the incapable 2020 that people still can't accept different type of kinks and fetishes, and need to be butthurt over it instead of simply moving on and look for content you enjoy.
Or if you want more diversity in racial representation, be the change for yourself and create stuff which fits your vision. Nobody stops you to make your own (Porn) Game which do stuff differently. But to kinkshame doesn't help anybody.