When I said, "you decide how things go", I did not mean it in a literal way where the MC gets to make a decision about everything that's going on in the game, that would indeed be nearly impossible to make. What I meant was, should you choose to play as a dominant MC, your dominance is recognized and respected by the characters in the game. This is totally feasible and it's entirely up to the creator whether they want to write a dominant MC storyline.
And yes, I agree with Chellay on that gay nsfw game devs should make information about what content is in their game public, whether to read it or not is up to the player.