To be fair, i think that some of the sex scenes actually add a lot to the narrative at certain points. Like that scene with Ian punishing Lena, e.g.? Not only it's fire, but it also shows very well how the whole cheating thing has affected their relationship going forward, as well as Ian's (and Lena's) feelings at the moment. Same for the trinity scene and some others, early in the game.
So i don't think it's jarring or that EK's games would necessarily be better if they're made purely sfw. There are some sex scenes which wouldn't make difference if they're removed, but overall i think EK's games would do better as equivalent of those romance novels, which do include some sex at the end of the day. It's just not main focus.