No that just just sounds like your into being a dom, the white ntr cuckolds are racist fucks because there "kink" is a racist stereotype of black men created by the ku klux klan to justify lynchings.
Im willing to bet there were shitload of southern white segregations in 1915 who got there dick hard watching the scene in Birth of A nation when the white woman was raped by the escaped black slave.
I think what you're seeing is part of a larger web of themes, and thematically, its quite dark. If you look at the typical NTR dude that steals the girl, you tend to see a very particular set of themes and visual cues: coercion, blackmail, rape, etc. The male characters are usually of the hyper-masculine or disturbed variety—giant black guy with 1500 muscles, fat ugly bastard, an evil CEO, etc. So, the theme here is animalistic, psychopathic, and 'monstrous' aka things we predominantly view as being 'inhuman'. Its not just that the stereotypical black guy is a racist caricature, I think it may be a deeper relationship with the idea that they arent even human or rather less than human. This applies to a lot of NTR protagonists, but the directionality of where male black characters appear, typically being NTR, does depict, to me at the very least, some kind of sub-human view of these characters. Tho This is all conjecture I don't claim to understand any of the motivation or reasoning behind peoples wank bank preferences