First of all, this idea from gamers that what you do for entertainment has no effect on the rest of your life is just not true. I've heard this before, about how people bash gamers for playing violent video games, and how it is essentially bs. But it is simply incontrovertible that something you spend multiple hours doing every day affects the way you think and see the world. How could it not? A person who fantasizes about raping their stepmother, or is entertained by the idea of doing so, is absolutely feeding a desire that will grow and create destruction in their life.
I do not accuse you of "fantasizing of being a real life mass murderer" when you play FPS games. I certainly hope you don't do that. As I mentioned in another reply, FPS shooters to mass-murderer is not really an apples-to-apples comparison. A better comparison would be a game where players perpetrate a school shooting or something like that. I would say a game that is based around purposeless, realistic violence, where the point is to just revel in the act of inflicting harm on other people is bad. A platform like this, would be justified in removing such a game. It is for similar reasons that I feel they were justified in removing this one.
I'm really not interested in playing the statistics game. The lack of some "statistic" linking a game where you sexually assault your stepmom to real-life sexual assaults really doesn't prove anything. You can find a statistic to support almost any claim in the world if you look hard enough, even nonsensical ones. There are many other factors that contribute to SA that could easily conceal the effect of one video game. But that does not mean the effect is not there.
By playing a game where you do something like this, you subconsciously normalize such things in your mind, and in a way, glorify them. And I cannot condone normalizing or glorifying sexual assault.
In your last paragraph, you said that people engage in fiction for entertainment. The fiction we are talking about here is sexually assaulting your stepmom. If anyone finds that entertaining, I would say that is pretty messed up and that they should stop entertaining themselves in that way.
Summary
What you do for entertainment has an effect on the way you look at the world. That includes video games. A video game where you commit SA is included in that. The effect such a game has is bad, as it leads to the normalization and glorification of SA. If SA is normalized and glorified in someone's mind, they are more likely (not guaranteed, just more likely), to view it as not a big deal and be dismissive of it. Therefore, it is a bad idea to play a game like that. And knowing that, a platform like this can and should refuse to list it for sale.
