I think she is asking how rape can become normalized for fans, and how they can read this genre and compare the characters when all of them commit rape, meaning, they are all the same. I think I understand where she is coming from, but you don't necessarily have to agree with everything you read. On the contrary, some people read out of curiosity and to explore emotions, especially in stories that involve suffering. There is a psychological side to things. I might enjoy a story because I like the plot, or because the portrayal of emotions and character development was satisfying, but that doesn't mean I agree with the moral of the story.
I fully realize that reality is different, and some people here come from backgrounds where reality is completely separate from fiction. As someone who reads everything and is definitely not a minor, let me tell you what the main comment means and why I agree with it: it’s because the character here is truly unlikable and cruel, and the sudden way his feelings change is unacceptable and not smooth at all you just can't accept it. I’ve read this author's famous work before, and I didn't like her protagonists. There is no real complexity in the characters. I didn't like the main character in Painter of the Night either, nor many other works of the same style, because I can't accept rape, repeated abuse, and then a sudden shift in feelings for both sides. I'm not a fan of Stockholm syndrome, nor of characters that expect forgiveness and love without real regret and suffering.
I don't know if I'm making sense, but character writing and how their emotions are handled really matter, even if the story includes abuse.
I want to add something else human minds get used to and adapt to anything as long as they are repeatedly exposed to it. Don't you see the news around the world Even atrocities become normal and repetitive as long as the experience isn't firsthand. As a survivor of war, I can tell you that people even get used to death on a daily basis. Of course, this doesn't make unethical things ethical. Naturally, I don't agree with normalizing rape in these stories, and I still don't understand why some authors go so far in depicting abuse. But at the same time, some readers might be trauma survivors themselves. The more I learn about the human mind, the more I realize it just tries to adapt and cope in any way it can. So, I completely understand why you finds it ethically unacceptable.

How did somebody comment this with full confidence "The problem with jk, not that he's a rapist, he's just unlikeable. There's more likeable and better rapists" holy shit we are devolving