Though generally if someone gets super sad, annoyed, angry.. So much that you have to go on the internet and cry to the developer about the fact that it doesn't have a happy ending and that NTR happens.... In a NTR game, they should really gtfo and play something else.The dev plans to rewrite Melphy story so she did not lose Virginity to Gustav (IDK how he'll implement it). As far as what I've read though it's something about not having sex (actual penetration) scenes with melphy to unlock virgin melphy (so possibly a whole rewrite to melphy's virgin status) and possibly adding bleeding to first time sex scenes with penetration (even random enemies).
Some people like different degrees to their kinks, there are many ways to enjoy NTR games and it does not only revolve only on one spectrum.
Some people are only fine in NTR games if it's the male protagonist doing it, some like hardcore NTR, some wants "a happy ending" in NTR games, etc.
It's not like adding the update will remove current NTR scenes in game.
Plus there is a greater emphasis on virginity in Eastern Countries/cultures that is engraved upon the person upon youth.