That's the trick. Aggressive seduction, dominant corruption, negging, etc, these are all things that will fill the NTR niche and are actual real methods used by real people. IRL they're assholes, but still. Raping people with giant dicks until they like it is not a thing. It has never been a thing. This covers 99.99% of all humans, this isn't even debatable. Just because there's that .01% that are so fucked in the head from previous traumas doesn't make it a thing.
You are right, but also somehow wrong. Google the statistics of how many women orgasm while being sexually assaulted. Google any "narcissist victims" forum. The vast majority of guys who rape IRL aren't good at sex, they completely suck and just desperate losers, so why the hell you expect them to make their victims "like it", lol.
But making a girl addicted to great sex and endure an unequal relationship where a guy cheats and treats her without any respect? It happens all the time, I know a few couples like this as well. When you are great at sex (dominant, can last for a long time, know how to do oral, etc) girls become extremely submissive and they forgive you a lot. I wouldn't be surprised if in some cases they even forgive rape. By the way, rape isn't the same. There are different variations of it. If a hot girl blackmails a guy loyal to his gf to cheat with her then there is a chance that he'll fall for this girl and wouldn't be bothered with the blackmail part anymore. Why do you think that it is impossible with genders reversed? Have you heard about Stockholm syndrome? This is not an exception, but rather a rule. Also, I don't get why you put negging and "aggressive seduction" at the same level as sexual assault, lol. As someone who was with tens of girls (30-40), I can assure you that not treating girls seriously, teasing, and negging them are the most effective ways to get laid and to make girls fall in love with you. Being nice and complimenting them could kill all attraction very fast. It is something any guy who was with enough women knows.
Anyway, if you want to know why many people consider this "raped until she enjoys it" hot as fuck then I can explain. Basically, a girl usually resists the guy because "she isn't a slut, but a loyal and conservative girl". But sex is so good that she becomes a slut and so she has no reason to resist anymore, in fact, she loves the sex so much that she forgives her abuser. Her morality loses to pleasure from sex. You assume that girls hate sex and say no because they wouldn't enjoy it. But no, in fact, women get more pleasure from sex than men do. But they are conditioned by our society and, to some extent, biology, to maintain their unavailability and pickiness about men. Sexual corruption is one of the most popular genres for a reason. It isn't about rape, but about seeing how a good girl becomes a total slut. Realistic rape (where girls cry and suffer and never enjoy it) is one of the least popular genres. Most guys don't want to see a girl dominated by fear and pain, we want to see how girls are dominated by pleasure.
I'm also not sure why you assume that guys who enjoy hentai with rape actually think that it is something that should be done IRL, lol. Do you even understand that Japan has one of the lowest sexual crime rates in the whole world? It is proof enough that porn helps to prevent sexual crimes and that people can distinguish reality from fantasy.