It's just the way of things. People are going to push their fetishes onto the devs. There's always the pregnancy people and the femdom people and the NTR people and whatever other weird crap people might be into. I respect a dev that sticks to their guns and makes the game they want to make. That being said, more blowjobs and anal.
It's not the same though, impregnating your girl and NTR aren't comparable, they are polar opposites. NTR is more like scat or gore, it's repulsive on a primal level to 99.9% of human beings, it's genetically encoded in to us.
Saying all fetish's are equal is disingenuous. I am pretty tolerant of weird sex stuff (wouldn't be here if I wasn't) but there has to be limits. NTR is one of those things that ruins a game for anyone who's not in to it, just like scat or gore. Pretty much no one is gonna get upset if a girl does anal and oral for her man, but almost everyone will be heartbroken or disgusted if a girl cucks them.
What if you had to cut open a girls intestines with a chainsaw then eat her shit to progress the story? Both those things are also fetishes, are they equal to blowjobs and anal?
If NTR people want to be cuckolds that's their business, but their fetish ruins it for everyone else, so just like I and so many others stay out of gore, scat, and NTR targeted games and threads I ask for same courtesy.