Respectfully different from your criticism, the creator has done a very good job so far in the technical aspect and in creating a story focused on giving us a scenario where humiliation, sexuality, and degradation toward men are part of everyday life. I understand your point about the exaggerated situation compared to our reality, but that's what it's all about, presenting us with humiliating situations for the protagonist where he is subjected, in this case by a society led by a woman full of complexes and revenge (this isn't a spoiler; see Daniel's diary section, where we see a bit of his past and understand why there are many actions against men thanks to her "charming" husband).
It's also worth noting that you can skip a lot of the content, but those decisions happen from the beginning of the game. In my case, there's a lot of material I'd like to see added, but the developer can't include it because I also understand that there are many other players who aren't comfortable with the content. Also, I apologize if it sounds obvious, but despite its subtlety, Kalie's behavior changes based on her levels of goodness or evil, the same with the MC. So, the ideal protagonist you mentioned, who can break free from the chastity belt, may be introduced in future versions of the game.
In my case, I play four routes:
Good girl/submissive boy
Bad girl/submissive boy
Good girl/tough boy
Bad girl/tough boy
And there are variations in all of them. I also disable and enable the other parameters (forced bisexuality, cum eating, water sports, etc.), and depending on each route, there is more consistency in how these events occur.
And finally, regarding the cherry on top you mentioned, the forced NTR, Kaeli and the protagonist had a conversation where she justifies that it's not cheating because she's doing it in front of him and with a woman of the same sex (due to the ordeal in Clare's Department). If you configure the actions, from the bachelorette party, where she's not interested in Q, Kelie is good, and the protagonist is submissive, the NTR cheating feels like more fetishistic theatrics where everyone agrees, so it's not strictly speaking NTR.
This is my opinion, and maybe you don't like the genre of this game, but essentially that's what it's about: female domination, in a public and very exaggerated setting, because the script has explained it that way. (because the women in charge are trying to impose a culture, based on revenge against men) and while the story happens we see exquisite sexual scenes loaded with an amazing Femdom.