Of course you are free to dislike the game and not play it. I sincerly hope you find something that better suits your tastes next time. However, I just want to clarify the scene in question for anyone unfamiliar with the game that comes across this discussion.
In the scene in question both Alexia (the wife) and Greyhide (the minotaur) are secretly drugged with an aphrodisiac (this is revealed in detail in a later scene). Due the drug, during their conversation Alexia's thoughts will wander to what Greyhide has under his loincloth. Then you, the player, can either have Alexia ask to see it, or to get a hold of herself and shake it off the thought. Personally, I don't think having a stray lustful thought counts as NTR, I'm not the thought police so as long you don't act on it that is all I care about. On the other hand if you make the choice to have her request the see his dick, that is on you and you don't get to be mad about what comes next.
edit; just realized i ended up writing a fucking essay. my b. other edit/proper conclusion at the end of my response. feel free to only read that or read it first to to get a better idea of my take.
I was scrolling through to comments to see if the dev had decided to actually remove the NTR in the other route rather than just make it """avoidable""" and saw you making some sense so figured I'd try to explain.
The issue is that someone who dislikes NTR doesn't want everything to do to be marred with its existence. It's like having girlfriend who doesn't cheat on you but keeps reminding you of their better ex with the bigger dick and better personality every month or two. Sure you're not getting cucked in reality but it sure as hell feels like you're at least getting a taste of it. Games like this seem to often be colored by the fact that they're NTR bait, which is a good thing if that's what you're into since it means even the setting serves genre but also means you need to put in much more work to make it "avoidable". I feel like a lot of people try to take the definition of NTR as gospel when people who use the term to avoid it only use it because it's the only decent/common descriptor for what they dislike not because it's wholly accurate.
If we're talking about the scene you specifically brought up, people who dislike NTR would obviously dislike anything that leads to it or begs the question. Your clarification of the scene only made me more sure the NTR wasn't actually avoidable just optional. The very scenario reeks NTR from the jump, no one who's not trying to cuck you would even think of a setting like that let alone force the player to engage with it. If the settings are being written like this it's clear who the dev is pandering to and what they want you to click. This all seems so obvious to me that I can't help but tin foil hat think that people are simply trying to trick us into playing a game we won't like. Eventually I wake up and assume people wouldn't care enough to do that but not everyone second guesses themselves as evidenced by the vitriol spewed on both sides, often unprovoked.
The proper solution, which is implemented in plenty of other initially NTR games, is to be given the option to avoid NTR scenes closer to when the build up starts. For example, the aphrodisiac scene should never happen if I'm trying to avoid. Going by the way you describe the scene there should ideally be an alternate scene/route that don't involve either the aphrodisiac or the minotaur, ideally both. Maybe this isn't as obvious to someone who doesn't mind NTR but both aphrodisiacs and beefy men alone in a room with the player's SO are pretty much exclusively NTR/Rape tropes. Their very inclusion makes my dick shrivel up in fear of what's to come. In other games it's common to be cucked as a result of neglecting the SO, so the option to avoid NTR should be in whether or not the player chooses to pay attention the SO before another man or whoever enters the picture at all. From your description this game sounds like a case where the plot is so NTR driven it's nigh impossible to make the NTR avoidable without writing a bunch of alternate scenes and plot descriptions that don't clearly play up that vibe.
Either way this is mostly the fault of the f95 devs refusing to expand the tags to include more appropriate tags for situations like this. There should really be a tag for things that use cheating/NTR as a plot driver which is much more indicative of whether or not someone who dislikes NTR will like the game as opposed to whether or not the NTR is avoidable/optional though even that would help too. That way people like me would never even bother to enter the thread of a game like this and you'd only be left with the absolute dipshits who go around looking for trouble and they can just be ignored/banned. Also to be clear I'm only here because I remember the game from back before it was properly tagged and they were just implementing the NTR being """avoidable""".
Appreciate you clarifying the scene as that pretty much cements the devs intention to not make an actual non-NTR route as well as your attempt to understand and extend an olive branch to the other side.
editedit; Read more and judging by the rest of the thread this game seems to be exceptionally well written NTR and inspired by some of the most beloved dark fantasy/NTR/rape stories in the business (dark souls/berserk) so I don't see how you can actually make something like that avoidable when the drama of stuff like that is so integral to what they they appear to be going for. Feel like that'd require a lot more work on stuff they're not interested in than I'd feel comfortable asking of their team. Best of luck to the writers and I don't have any issues as long the NTR tags stay as they are. Glad to see ya'll getting/making something good.