I'm aware of what NTR is. My original response was to someone who was curious if you could change the direction of the plot - which you can't - and then I responded to someone who tried to argue that all NTR is like this story, to which I believe we'd both agree that it isn't. I would agree this doesn't need to be fixed as it's clearly being written for fans of bleaker NTR games - nor was my original point that it should be - but I would say that anyone looking for a fun kind of NTR is definitely in the wrong place.
Well, I only say that because you begin disagreeing with the femdom application, only then to go on to describe what NTR is, which is confusing because just because it's primarily NTR doesn't hinder it from having femdom themes and tropes as a secondary kink. If anything I think it makes sense that the femdom thing is something that's built up to. Just as NTR is a process of a partner's loyalties shifting away from the MC, femdom is also something that develops out of the wife's growing confidence.
The only difference between this game and any other NTR game and the only reason it's considered bleak, is the fact that there's no 'win' clause. To use your example of Seeds of Chaos, yes, there's NTR in that, but you can also choose to focus on Alexis and keep the couple devoted and uncorrupted. But that isn't an option here. You will lose your wife, and I find that fascinating as a story that your only real option is 'how to lose'. It's certainly not a game I'd play every day of the week, but I do think there is an element of fun in it so long as you're not caught up in having to 'win'.