Haven't got to playing TACOS precisely because of the ambiguous feedback, but every time you or somebody else describes it with some detail, I'm inching closer.
Just based on what you have said, in the entirety of this post, also Ratadan's feedback to that, and my own gameplay, I would encourage you to have a go at TACOS, when the mood strikes.
It can easily be played more along the lines of Stag/Vixen kind of gameplay, with no humiliation or overt cuckoldry. In fact any cuckolding is by its nature, by choice, given the situation, as in mostly mild voyeur tendencies. (you can avoid this too, at any time)
There are many swinging and sharing scenes available, and I never once was made to feel cuckolded (even though I am fairly sensitive to that whole thing) MC is confident at all times, and not a dumb bystander. There are plenty of holes for him to enjoy as well, lol.
There are choices whuch can lead to cheating and mild NTR, but they are easily avoided, and as Ratadan said, the dev will eventually bring you back to a choice that steers you away from this, if you onnly take it then. Each season seems to wrap back to a kind of reset in the relationship, though if you have made major character choices, they will stick (major cheating/not, major cucking/not etc)
She is not the only one given the opportunity to be a cheater, you can be just as guilty of that as her, and the punishments will be there.
Choices abound, and its easy to stay on a track you choose.
The first season sees FMC go into the slut territory as MC actually wanted her to, (she was an innocent) and it gets pretty "raunchy" while she learns her limits, but then it gets reined back a bit and becomes more controlled. Which is where the ambiguous statements about the game came from, I feel. Once it settles, your choices drive the boat. Pick your battles wisely, and it will be fine. Just remember that it is a temptation oriented game, along with her corruption, you too can become corrupted.