I like it when everything gets thoroughly trampled. If she was full of dignity, she should have none by the end of corruption. As others replied, it IS very important how you get there. You need to sell/execute it well to actually have it make sense without completely destroying your suspension of disbelief.
I think a lot of dislike for this utter dignity loss and letting everyone do whatever, is that it has become a pretty overused trope, especially by people who rush corruption. So it might be dislike by association, because those stories are usually crap.
Because 90%+ of NTR is “fast-food” NTR that largely ignores the downfall part. People’s attention spans aren’t what they used to be.
Just go to any “slow-NTR” game, you can almost always bet on finding a smattering of complaints about how "it takes hours to get to the “good stuff” (sex).
This is evident in the fact that some people regard Terasu MC as the “king of NTR,” despite the fact that the majority of his stories take place
after the corruption is already done. No build-up, story starts with girl already banging the bull.
You compare NTR stories 10, 20 years back and NTR stories now, it’s pretty obvious this generation is cooked when it comes to long-form reading.
Cheating (+ lots of sex scenes) is prized more than the traditional elements of corruption (blackmailing, insecurity, jealousy). Of course, there’s also the fact that writing about the corruption of a pure girl is much, much harder than writing about a debased slut (with a few throwaway lines to her past self).
I can see why writers opt for the quick and easy route when it comes to NTR, but it does lead to a serious lack of variety in modern NTR. Which is why we’re all here waiting for doujin DLsite releases to see if there’s any gold left.