Just in short, compared to your post, because there is not really much to say, as you disqualify yourself pretty much with the usual reply of "Inevitable" and "prevent from happening" and guessing what the Dev likes as reason why he put something in the game.
If YOU choose to look in both cases, it is definitely your fault for seeing they Voyeur-Scenes, not that of the DEV. As the Choice is YOURS, it is "avoidable" for you to see. That this does not "prevent it from happening" and is thus "inevitable" is a weak argument. Because in the cases of your arguments Samara would have to be in the usual singlestatus/in a failed, loveless relationship or Anne would have to be the usual sexually frustrated and only relying on her masturbation/toy-collection milf. Otherwise it would NOT in any sense be "INEVITABLE", that both have some form of sex that not only results from masturbation/toy-use. IF you would have thought a little bit more, you would have realized, even if the scenes where totaly out of the game, as per logic it would still happen, unless their relationships where changed completely from what they are.
So you can only blame the DEV for the fact that some chars have already relationships and/or other forms of releasing sexual tension besides the usual masturbation/toys that are present in almost every game today and trying to bring that fact across. (it could be hinted at in text and I bet you would still complain about it, going by your weak arguments.)
And wow, some bad feeling near NTR? About time people stopped to selfinsert over the bounds of the MC, because a kiss on your cheek/lips from one of your female friends, that you dont see as more than that, would otherwise be near NTR too, if she slept with her BF, before meeting you.
hahaha... well, let's go there again try to explain the difference between JUMP and AVOID.
I believe you know this difference very well, but as you have a "pride" to be a beta tester of the game and will defend with nails and teeth the DEV, I will deconciderar that you do not know this.
So JUMP is like this now in the game (and again, nothing against, it's the DEV game it does as well as you wish) ie you just close your eyes so you don't see something. While AVOID prevents this from happening. But well I think that was already pretty clear in my post when I presented a form that could somehow prevent sex between Samara and her boyfriend at that moment(pay attention that the key is at the moment, and not in what they do in their room the night when the MC this Watching the loli on your notebook) and we wouldn't need to be a fucking voyer or a retarded coward.
And to make it even clearer I'm not saying that the characters have to be virgins with a promise of chastity until marriage, for God's sake my favorite LI are always the MILFs, so I'm fine, only when I'm with a girl I'm not hot to ask her about her past fucks (this in real life of course).
Now about your incredible logic, you found out about her having sex with her boyfriend. Dear my mother was married to my father until the day of his death, had 8 children, seriously I needed to see them turn to know that they had sex at some point in all these years of marriage? Damn since the first smoothie that Gordan gave in Samara in the kitchen was already more than explicit that they were an active couple, did not need in any way rub their violent sex in our face, yes I can AVOID looking, I'm not stupid that option to respect privacy was for that. But as I said and repeated before, could put them only in make-outs and anyone who wanted to see them progress to something else would be there as a perverted of shit watching, who somehow had interested her (even without knowing if she would be or could come to be an interest in the game) would come in and prevent them from having sex at that moment and in those conditions and the whole kiss thing I said would not be so " disgusting" (and this would certainly calm a lot more players, but as I said ruined her for me and I have no longer interests in it, but without much damage-causing still taste of most girls, so one does not make much difference, just I get a little sad because she seemed nice and such, but still we can have her as a good friend).
And about the kiss, I'm not inserting myself about mc feelings, yes I really like to emerge in the skin of the MC, so I do not like stupid perverted boys (and I add more, this MC has some defects but there is something in it that made me very happy to see, he is not a night rapist), so I don't know you anymore when I comment on playing a game that really interests me and holds me in history I kind of feel his feelings and turn versa, I think that's the great asset of VN for movies and books, the fact that I can make CHOICES at some point. So for sure I refused the kiss on the labia of Samara after seeing her having sex with her boyfriend in the alley, as I said, she just had sex with a guy in the previous scene "kiss" her at that moment reminds me of the NTR scenes (in general, including Netori) where the girl finishes having sex with the stallion and immediately goes to the horn. I'm not saying that this is NTR or that the MC has feelings for her, or that she betrayed him, it was my feeling and so I refused. And as I said earlier if we had somehow prevented sex at that moment I will have willingly accepted the kiss, even though I knew she was in a relationship with Gordan, but as I said, I wouldn't have to see their intimacy. But I already understood what the DEV wanted to show in the scene, so at some point (here or in my evaluation about the game) I said that I'm fine with her as a friend since she is very happy in their relationship, just do not have romantically interest in this whole thing and also as the part where she reveals that walks in a dirty way because her boyfriend likes that she sees herself as "whore". This is unfortunate to me because she looked like a sweet girl and worried about MC and this whole "secret love" thing not seeing Gondan as a future husband. Tells me that she likes the MC and that she hasn't had anything yet with him because she's in a relationship that's not a failure and knows that if the MC stays there it would be a goodbye, because she sees potential for him, as she even said that he's going to go to college and get things were expected and she and Gordan didn't have a "future", so I repeat she had the potential to be the favorite girl of the majority, unfortunately, that scene ruined her for a good part of the players. But as I said, it's the DEV game and it does as it sees best, this is simply my opinion and is there to be ignored or reflected.
And picking up the hook of what I said just above, the game is the DEV, in no way should a PLAYER feel guilty for a scene in the game, he may feel like it or not, plays or not, but guilty? No... as I said the DEV creates the story, creates the scenes, program, and all the fucking work behind this work that we are following here, if he thinks that the scene is somehow important to tell the story he wants, he will put it there, if not he can make it avoidable such, so as I have hit innumerable times on this key if it was really avoidable and it would happen there, you could blame the play of being a donkey or act like an idiot (I still strain to remember the bad ending of Summer Scent, when I wanted to give a badass and did not know what awaited me ... hahaha), but in this case, I can not in any way blame a player for seeing or not seeing a scene that happens anyway.
Forgive me if at some point it seems that I am wanting to teach or force the DEV to do what I want, are only a few options that as I said can be ignored if the DEV or any other for as well as you want. I'm sorry too for the lousy ingles, I don't speak fucking English up to my Portuguese is sad, my communication can be quite confused.