You're not criticizing though. You're bitching. You don't like how the story that Arc wrote is turning out. If this was a movie, you would walk out. If this was a book, you'd stop reading it. Now, if you have a valid criticism like "The UI rework that Arc developed in the most recent update is broken, and makes it incredibly difficult to navigate," then YES. You are criticizing the game. If we were in...chapter 8 and MC and Gramps were still plotting and trying to set things up and there was no actual progress on that front, "After all this time, I would expect the metaplot to progress by now," that would ALSO be a valid criticism. However, what you are doing is "I don't like the story's meta plot but instead of ignoring the thread I wanna complain that the story didn't progress how I wanted." Additionally, you aren't in the review section. You are in the general chat section.
So let me say it again: You not liking how the story that you didn't write turned out, especially a story that actually makes sense, isn't criticism. It's just whining.
Go to the review section, leave a 1-star with "It isn't just a happy harem game and gets dark," as your review and be done with it. Here's why: You don't have people telling you to stuff it because you're bitching, and people who don't care about your opinion on how the story develops doesn't have to read your bitching. And people who read the reviews will see that, and if they share your desires of a happy harem game, then they are saved the aggravation.