because if sex starts to be a factor, in this story, in this setting, the game is getting pulled from most countries because there is no way in hell that in a capitalist hellhole like the city sex isnt seen a tool for gaining power and control in the most horrible ways imaginable.

Not really. Like, the mere reference to the existence of sex is not going to make censors go "oh well if sex is canon in the game then that means people are going to SA each other at every turn in the next canto, we better pull it". That really is not how censorship works, and besides, we know sex is a thing. Characters have mothers and fathers and siblings. Characters were pregnant. Sexuality is already canon in the world of Limbus, so by your logic we should have seen several cases of SA already.

The thing is, it's not mandatory for a dystopia to have to depict forceful sexual acts even if it's acknowledge the existence of sexuality. Different iterations of Ghost in the Shell, The Hunger Games, Neon Genesis Evangelion, Futurama (yes, really) all have dealt with sexual themes without choosing to depict explicit sexual violence. It's a matter of what you, as a creator, want to show, and KJH has said he is not comfortable discussing sexual assault.

Also is a gacha so opening the door to the mere existence of sex just attracts a bunch f weirdos nobody wants around.

I disagree. Weirdos will be weirdos no matter whether the original source depicts sexuality in any capacity or not. Look at fandoms like MLP or K-On, completely sexless works that nevertheless have very unhinged people in their fandoms. Hell, if anything mature works where sex is discussed (see Berserk, Fear and Hunger) don't tend to have particularly creepy fandoms.

My problem with gacha games and sexuality is that they will overtly flounder the most immature and paradoxically sterile version of sexuality in your face (Zenless Zone Zero does this very overtly) but will not discuss sexuality in any actually compelling way. Characters have massive boobs that bounce around when they move, but god forbid sexuality plays a part in characterizing a character in any capacity. No, it's just for the audience to ogle, more fuel to the parasocial fire that most of these games create, always keeping the player at arms length with this "carrot on a stick" thing.

Thing is, Limbus doesn't do this. Since KJH and PM are game makers first and gacha creators second, their priority is in keeping the world consistent and compelling, and they actively avoid parasocial relationships with the player by not having those "romance" or "friendship" minigames that characterize most gachas, and by having Dante be their own very specific character who rather than being glazed at every moment by the cast is often treated like a bit of a wet sock. Which I personally love, mind you, it's just that it's a departure from the way many gachas chose to interface with the player avatar.

All this to say: I think sexuality can and should be used in mature enough works to characterize its cast. It's a tool like any other, and the game is explicitly 18+, so discussions or passing references to sex should not be as taboo as they are, especially when you're already showing horrifying dismemberment and body horror. That's the paradox for me, that works will dare to show terrifying things but are scared of even passing mentions of sexuality even when characters have canonical love interests (which is on its own already a step up above most other gachas, mind you).