I don't see any problem with dropping/boycotting a game because they dislike something that happened, though? Sure, it's dystopian setting, but doesn't mean people will like everything that happens or be okay with it?
Let's say you watch an action anime, and your favorite person dies. Sure, it may have been expected. But boycotting it is 100% justified.
I'm actually quite into rape, like 3,000 of my pixiv favorites are rape tag, but I was still very uncomfortable with what exactly was going on and looked for any possible way through the game files (no luck). Then, I learned that we will be able to save her, so I'm quitting the game until then. I liked her more than Ako. Both are lovely.
I hope we can bring Yui home and be in a relationship with both girls.