If you've followed King B's other works his main focus is on extreme cuckolding with occasional redemption paths. The cuckold lifestyle is a subset of the swinging lifestyle. In real life, cuckolds are often confident and effective in all areas except the bedroom. They don't necessarily have small dicks or bad looks and often times cucks can be people who normally have very "alpha" jobs in real life such as police, army special forces or CEOs.
They're the ones usually initiating the lifestyle and communication + mutual respect exists beneath the surface level cuckold game. The more humiliating and extreme cuckolding is usually done with couples who've been together a very long time and gradually eased into that because it's what turns the cuckold on so its for him while the wife is more about sexual freedom and exhibitionism.
In the context of the game there's a large number of us who occasionally or primarily partake in some extreme humiliation scenarios like cuck pregnancies, pussy free cucks and black owned wives but that's just stuff for fantasy jerk off material. In practice a real cuckold situation is a pretty normal relationship with periods of sexual play that dabble in a lot of the themes discussed often with dedicated sexual partners for that kind of play who are not at all vested in interfering with or disrupting the pre-existing relationship.
I think the episodic nature of the updates makes you guys think that black-only cuckolding as with the latest route is the intended or "final" route for the game, but that's not true. It's just what the author likes and a large number of new and pre-existing fans look forward to content wise. The game will not force you to play this way and there will be more balanced cuck routes where the e-sub stat is lower and Nat gets shared with people like Matt or Carl with Ethan playing a more sexually active role.
Right now there's 2 maybe 3 super cuck routes that I can see... Ethan Reluctant, Nat Reluctant and mutually consented.
In Ethan reluctant: Nat is actively cucking you out of spite and disdain and Ethan will probably have an escape hatch with Riya or just live out the rest of the game bitterly resenting what is happening until he either snaps or accepts the situation.
In Nat Reluctant she thinks the whole cucking thing is absurd, but does it anyway for Ethan (you can actually lean out of this path and go to a more mutually conensual cucking after an initial reluctance period) with the hopes that she can shock him into turning away from this path. But then she ends up liking it and cucks him out of spite thus freezing him out of the relationship. He's so intensely brainwashed by the fetish that he can't see it's destroying his relationship with her and making her black owned.
If you go mutually consensual or just the generic "pink" cuckolding path then both sides are into this and it escalates with both sides wanting it. The underlying theme here is Nat still loves Ethan, but they're pursuing the cuckold path as deeply as possible if you choose options like putting darrel's dick into Nat for him instead of holding her hand, eating her creampies etc. If you keep picking those options you are both voluntarily and "nicely" entering into a submissive cuckold humiliation branch. The other two routes can put you in the same situation but having them imposed on Ethan or Nat with deep resentment from the imposed party.
If you don't like these extremes, just choose the edom options where you fuck Nat with Darrel, tell her you love her, joining her without her ignoring him and then you'll be in a hotwifing scenario where you're sharing her. The only thing about that route is you get less sex scenes and much of it has not yet been implemented. Which is why everyone can be forgiven for misunderstanding the game as railroading you into an extreme cuck scenario.
Of course it goes without saying you don't have to do any of this. You can just be a normal monogamous exhibitionist couple or turn Nat into a total bitch who Ethan then divorces to be with Riya or nobody. It's all down to how you play this game and if your chosen route hasn't fully materialized yet, just wait until the dev gets to it.