Honestly, I can get that some people are upset that the MC and Alice continue their open relationship, even if I do not at all agree.
Yet some of the stuff written over the last few pages is just silly.
When you have an open polyamorous marriage, then the wife having a girlfriend IS NOT CUCKING, not as long as this is part of what the couple agreed on. It's clear that Mike (the MC) also has the same option and seems to have used it from time to time.
So it's not a degrading experience for him, and he doesn't get off of it (either of which should at least be there for it to qualify as cucking), he just accepts that as he has the right to be together with someone outside the marriage without Alice, so has she.
And yes, this might not be something that would work for me or for you, but in the context of the story, even with the players partially controlling the MC, this seems to work perfectly well.
It is clear that Alice and the MC are very much in love and happy, it is shown so often during the ending, how much they care for each other, how important they are to each other.
They are as said in the game best friends and the love of each other's life. All this BS about the MC not being the first for Alice and similar crap, have you really read the dialogue, hell, even her face clearly conveys her feelings. Mike is by far the most important person in her life and she in his, to state anything else is not only untrue, it also means you just don't understand what you are reading/seeing, because you are blinded by your fear of getting cucked and losing the alpha male status in the game.
Yeah, it's not the traditional happy couple ending, but it is A happy couple ending. And maybe, just maybe in a world where the definition of relationships, of family, of gender are becoming ever more fluid, it would be wise to be a bit more acceptable to unusual relationships, again EVEN IF IT IS NOT SOMETHING YOU WOULD WANT FOR YOURSELF.
It is a perfect fit for the two characters, it doesn't take away from their love and friendship for each other, so tbh, while it might not be a relationship I would be happy with (certainly not the part where either partner can have a long term relationship WITHOUT the others' involvement), in the context of the game I found it to be a sweet and fulfilling ending.
As a child from a very failed marriage and having seen so many marriages around me fail over the years, from my siblings and friends to other relatives, coupled with my own experiences, my conclusion is that this lovey-dovey, romantic, passionate love between two people most of the time just doesn't last that long. The couples I know who stay together, either settle into a sort of friendship where they still love each other, but it doesn't seem to be romantic love anymore, find ways to fall in love with each other again and again, or find some other way (like swinging or even living separate lives) to keep their relationship interesting.
And I think that's something you need to do, find a way to keep things fresh or find another form of relationship, otherwise it ends in bitterness either with divorce or way worse, staying together in what often seems to be nothing but spite.