Lots of games are made for adults, and relatively few mainstream games have sex scenes at all. Many of the games with sex scenes have an option to disable those scenes and nudity. Practically all of them have an M rating with specific content descriptors on the box or store page, making it easy for parents to avoid it altogether. All modern game platforms also have parental controls that can be set up in a couple minutes.
All this is to say that if kids are seeing sex scenes in games, it’s because their parents have ignored all the warnings and options. For a parent to say that these types of games should not be made (as one of the above commenters did) for adults because they’re too lazy and feckless to use any of the options available to control and monitor the types of content their children consume, when it’s been made so easy, is disturbing. It’s especially disheartening to see it in a gaming community, from someone who presumably plays games themselves and therefore has absolutely no excuse to not know about the options available. I’m accustomed to hearing it from places like Fox News, but not here.
I just hope it gets the funding and resources it needs to realize its potential. Hopefully all the recent attention helps.