Normally I would agree, but sexual themes are only jarring when overt. Like porn-clothes on female warriors. If you can choose whether to engage in relationships with companions, whether to consider them sexual at all, that's another matter. What can be chosen to ignore cannot be used as a crutch. Think of it as a bonus content to the game.A genuinely good RPG story does not need sex to make the story good. EA is simply using this as a crutch to bolster up a poor story.
That aside, such bonus content can be very jarring when it's one-sided. Like, one group of players can enjoy the content, while another is left resentful that they would like to, but can't. And I'm not talking only about minorities here, as a female gamer I'm well accustomed to one-sidedness as far as such bonus content usually goes (think how sad female fans feel about Persona 4 or Rune Factory games). So I can understand minorities well. In this respect, including many options is exactly what is right to do, both humanely and commercially. Isn't complaining about that egoistic and misanthropic? Especially if you don't want it, as you say, just ignore it and leave it to others who do want it.
I wish more games were like that. Instead of overt one-sided sexuality in majority of games, I'd rather prefer to choose whether to have it or not, and which one.