I'm honestly not sure what you're arguing for or against here.
My personal stance is fairly simple. NTR kills my boner. So for obvious reasons I don't want it in my porn.
If a title starts out with NTR, or if the dev announces that it will be implemented at some point, then fair enough. I can give that game a wide berth, NTR fans can wholeheartedly embrace it and there's no damage done to anyone.
However, I don't want it added if it wasn't part of the initial setting and there were no plans for it before. I tolerate it if it's completely optional but that's about it.
If not indulging a fetish that I absolutely hate makes me a terrible person in your book then so be it.
I'm neither here nor there about it. But some people take whatever is in a game and blow it out of proportion for outrage which is their problem. What I'm talking about is how a story can develop and characters get crisis in front of them that needs resolving. What I'm saying is sometimes, it involves a conflict about a relationship with their SO in some form.
But you have some people that just get outraged on ANYTHING and suddenly everything is cuckery/NTR.
For example, if you make a story about The Sword in the Stone, do you think any of these people would want to hear about Lancelot's quest and his sleeping with Guinevere? The story is goddamn old, but suddenly they just hear about King Arthur, forget Lancelot and suddenly you have 11 knights of the Round Table since Lancelot is Xed out of their minds.
That's what I'm pointing out. Some people get ridiculous about story plots and it makes them look ridiculous when everything looks exactly like what they're fighting to prevent.