What do you mean by automatic? I played loyal Luke/loyal Kat, cheating Luke /cheating Kat and maybe also cheating Luke/loyal Kat and the scene wasn't "automatic" in any case, the player has to deliberately and repeatedly force her to masturbate in bed until you are given the option of having her tell the dad to jump her or to stop it right there.
Obliviousness doesn't invalidate NTR (netorare).
The reason why that scene hardly counts or works as NTR is because it's an NTS (netorase) scenario set up by and for an NTS MC (main character) to begin with. A guy blackmailing the MC and openly trying to corrupt and fuck his wife asks the MC whether he wants to let the wife shoot another porn ad for him to advertise jerkoff lube where she'd not only be naked again but also taking things further this time by rubbing up a male pornstar. The non-sharing/NTRable MC obviously says no to that, end of story. It's the NTS MC -who probably already had her fuck random faceless dicks in gloryholes and hobos in the street to begin with- who goes forward with it, who is turned on by it.
By the end of the shoot, after she's already lubbed and jerked the pornstar's dick and scooted her pussy right up against the tip of that dick, MC decides that's the perfect position for her to hold still while he turns his back to them to go do his taxes or whatever. And the player is then still given the choice of whether the wife allows the pornstar to shove his dick up a bit or not - meaning that even in the best of cases it would be fake ntr.
That's clearly not an NTR scenario where MC would hate it and be hurt to his core if he knew. It's too much goofy banana porn logic on par with "stepbro i'm stuck" for it. It's there for the NTS fans who also like to see a wife cheating around - not the same thing as NTR - not there for the NTR fans.
What next? For the next porn video Luke gets a dozen chipndale's dancers to rub their boners against Kat's lips to show the lipstick she's advertising is smear proof. As soon as it begins MC goes away to take a shit for half an hour. Luke loves that she's getting those dicks rubbed against her lips but will hate it if a tip briefly sneaks in without his explicit sayso?
We don't know if Luke would be hurt by his wife deciding to fuck someone behind his back. For me the important aspect of that scene is her willingness to do it, knowing that it's cheating if she doesn't tell him afterwards, which she doesn't. This demonstrates that something is changing in her, and that sex itself and the thrills and pleasure she gets from it are overriding her love for Luke and her desire to primarily please him. Yes, it's very possible that Luke would be ok with her doing that, but she denies him, because deep down she's starting to crave that pleasure for herself, and the thrill of doing something taboo like cheating, can make the moment of orgasm much more intense and powerful. As Luke is discovering himself, it can become addictive over time. Plus, she might be in the early stages of addiction to the drug, and it's slowly eroding her love for him, replacing it with a craving for sex and the perverse pleasures it can bring. It's clear that eventually the drug makes the addict, do almost anything to satisfy their cravings for the drug itself and the crazed desires that it elicits, usually that person's darkest fantasies.
I think Luke has been exposed to the drug longer, hence his need to cheat and make Kathryn do increasingly perverse things is greater ( and even if you make him resist, it still torments him). Everything points to him becoming addicted, even his intense conflict after he succumbs is evidence of the agitation and confusion that high levels of seratonin can cause in people. My guess is, all the drinks they can get at work are laced with the drug, because neither of them are taking it intentionally. And probably food products and certain cosmetic and pharmaceutical products are contaminated with it as well. The point of this is, it doesn't matter how Luke and Kathryn were when the game starts, because both of them are now caught up in an insidious plot, and Santini sees both of them as being important to his plans (which include a future push for the Presidency). So he is doing everything he can to corrupt both of them. And since both of them are still largely oblivious to this, it's incredibly easy to manipulate them and push them along a path of depravity (which is how Santini controls his underlings). And this explains why Kathryn in particular, could suddenly succumb to Pat's charms. It's the drug insidiously making her succumb to her darkest desires, even at the expense of her love for Luke.
I know some people don't like the drug plot, but it is what it is, it's in the game and it's been there from the beginning and people should just accept it, because clearly it's an important part of why Luke and Kathryn are suddenly developing into complete perverts in a relatively short time. By doing so, the Dev has created a realistic pathway for this happening, because in real life it usually takes much much longer for this process to happen normally.
Personally, I don't believe this scene was intended to be part of the main netorare plot either. That will likely be completely separated from the central netorase scenes, of which this one is a part. I think that was more aimed at Kathryn's cheating pathway, which the Dev has since ramped up, with the cheating scene with Pat. I assume there will more cheating scenes to follow for Kathryn, after a period of feeling sad and guilty for betraying Luke. One of the important takeaways from this game, is that you should be wary what you wish for, because Luke is unleashing a monster in his girlfriend, and as the flashback scene demonstrated, even 'innocent' Kathryn had a certain prediliction for doing nasty sexual things and enjoying them. Once the genies out of the bottle, it's extremely difficult to get it back in, so even if they stop taking the drug, Kathryn will have changed forever and it's not likely they'll be able to return to what they had before.
