It's sad to be honest, because these haters never get to enjoy anything really.
The psychology is simple: Antis will always exist on popular fandoms. It gives them a warm feeling of superiority. The author is writing Seungho. Mature people would just move on if they don't like how a story is written. The antis are obsessed with self validation and although they know nothing will satisfy them, they find joy on being the antis and the misguided sense of being above the 'clowns' or 'stans' or whatever is the word of the day to mock people for having fun with something they can't enjoy but can't give up either.
I never had the experience to follow a story that I don't like or have any joy on it.
The topic is for the most part full of assholes mocking people that don't feel miserable like they are. If people cheer on Seungho minimum bare acts towards softness, they are mocked as if being a nasty hoe bashing a story they can't stop following is the cool thing to do.
Honestly though, this story is 60+ chapters long. It's evident the author is doing her own thing and Seungho will never meet your expectations. This is also a rape plot trope so even if you whine your bitter ass off, this will never be a social justice piece changed for your pleasure.
Besides the dozens of people who keep posting 'I'm dropping this' or 'I dropped this' just to be here again week after week, there are the faithful haters who probably account for more of the hype and popularity of this story than even the fans who are just relaxed following the story as the author is writing.
So, honest question: How is it to hate read a story so faithfully? To wait on every week just waiting for that validation of your opinion that the story or the character is doing exactly what you kind of knew would be? Is it really mocking, shaming, putting down other readers the only joy you can get out of following POTN?
I keep trying to remember if I ever chained myself like this to a story that frustrated me for over a year or two seasons and I feel like it would be such an empty win to have followed a story for I don't know, two years and 100+ chapters and look back and see that I only ever hated every chapter of it.
How does it feel to hate read something just because it's popular?