It's my understanding that NtrMan has several games and collectively has more than a thousand patrons and that it is not one game that has a more than a thousand patrons. If I am wrong then I apologize to you. The fact remains that non-NTR games in general do far better than NTR games financially.
The dev kind of caused it himself though. It's obvious that he didn't really know what to do with the story...
There's a gang in the town raping people, mc and his family will be victims to such attack -> Don't worry nobody will get raped -> The rape will be sexy and tasteful -> There is no NTR in this game -> I've removed all the NTR