Nah you're overanalyzing it. The author just has a thing for abusive tropes, I'm sorry but the smut in this chapter wasn't needed at all. What we needed was communication and instead, Kyungsoo forced himself onto Chowon. I wish I could still be surprised at this point.
Idk if I'm the one overanalyzing it tho... just saying. Like you said the author has a thing for that, so you can't expect more to it or read into it too much. The author also love to draw smut scenes. And I'm here for that. But I don't really think it's abusive nor it's forced if you wanna look at how Dojin does things with Hyesung. Kyungsoo can be respectful and gentle to his partner if he needs to be.
And they have already talked it out, Chowon have opened up to him that he can't change overnight, and Kyungsoo was trying to understand it. That's why Chowon said, he gets it so no need to pressure him. There's nothing else to be said here. Kyungsoo just notice Chowon is hard and needs some rough loving. And he actually love it and he toned down a bit. ╮(￣▽￣)╭ Idk what's so forced here really. It's actually Chowon saying hateful words and using her pheromones to Kyungsoo which is bad you know, and Kyungsoo proving he can't be treated like that.
Just cause this is first time Kyungsoo asserted dominance in a relationship, some are already saying Dojun is different, he's righteous... Semes here think with their dicks, Using Abusive Sex to get what they want... etc...
Just cause Kyungsoo f*cked Chowon into oblivion, doesn't mean it's abusive... I don't even know if you can differentiate rape and rough sex. Chowon knows himself what's happening and what Kyungsoo was trying to convey. The sex was just for smut purposes not to be taken seriously. It's like when couples get heated arguments then reconciles and gets passionate. I think Kyungsoo just realized Chowon was into this kind of kink, proven by how Chowon got hard when Kyungsoo didn't even so much as kiss him.