If you don't like it, don't play it. Simple. No one is raping you irl, no one is forcing you to play. As soon as you see content you don't want to be involved in, close the game. Alt f4. Go touch grass.
Would a content warning be helpful? Sure.
You suggest this, and insult the developer in your first sentence.
You are a piece of shit, for snapping and crashing out on the maker of a fucking porn game for not doing things the way you'd prefer. Take your "high values" and "holier than thou" attitude and fuck off somewhere. You make me fucking sick, and I hope some day you come to your senses and realize that your actions affect people outside of your echo chamber. Try talking to someone irl like this and see what fucking happens. Can't alt F4 then...