Not most NTR. Most, actually, still fall for the OLD "he's got a bigger dick than my husband/boyfriend" trope, and even in the scenario where there's not a brainwash/blackmail/hypnosis, there's cuck starts getting off to Netorase. Only in the sheer Netori-bound stories does the cuck actually get the girl back.
The one you're mentioning is probably Scream, by Poison Motion. In Kabe no Mukou no Tsuma games, the MC will inevitably be cucked, but how he proceeds is up to him( in 1, he can get compensation sex, divorce, or even stay, only to find out she's pregnant and still seeing her lover. In 2, he can do the cucking, evolve to swapping, or even develop an ED and choose to be cucked out of afliction).
Regardless, from Otomo Dori to Kedamono-tachi no sumu Ie, passing a little by Tsuma ni Damatte Sokubaikai ni Ikun ja Nakatta and into "the pluckered flower", the girl's always forced into sex, enjoys it instatly, becomes addicted, and either treats the cucked like trash, is passive until a possible breakdown on both of them, or makes them enjoy the netorase.
Misato's speach is more grounded on overall true( outside the kink) experience. While some of the girls may be enjoying themselves in the act( i'll not use an infamous quote from a certain polititian from my country), truth is, it's not easy to fall on the most common tropes as shown in fiction. It's disgusting and puts a strain in the mind as well.