That is the thing though, being raped is something else as having a past where the LI happily and consensually had fun, with often great impact on rest of her life also sexually, which for many is still TMI if it becomes a main focus in what is shown, but that is actually another discussion. It should be fully disconnected from the NTR discussion were it not for fact that basically almost every male is an abusive asshole and uses that tactic in someway and form in those genre games.
The same also with 90% of the games that are so called swinging and sharing, well for drama reasons almost each of those girls and men offered as sharing options I would be very unhappy about if my GF even in an open relation would be with someone like that besides me, since they are abusive assholes who are just takers and letting assholes in your life leads to trouble, not fun I learned over the last 50 years besides the fact for some weird reason I do not tend to like women I care about whether GF, friend, mother, sister, daughter or niece to be abused or in bad relationships that will hurt them or pimped out.
Now it is what that genre is about and should not change (just as with horror) and fans will not want it to change, but makes that genre mix kind of badly with games that are about MC getting with the girls. There are a few more reasons like impact and wanted drama that genre has on how MC's and Li's tend to be and rarely have anything resembling a great story, but more soap drama.
The thing though here is this is not a NTR focused game and if had used rape as reason for her becoming an alcoholic, well it would have impacts way beyond just her drinking beyond even just it being the thousandth time it was used, as if women are not more complex and full and can have just as many reasons as males to get into trouble beyond just someone forcefully abusing their body if want to be less predictable. Her walking in on a room with teared up bodies would likely do as well, especially if some were children's, there is a reason why cops and ambulance worker get psychological and therapeutic assistance after some cases as well.