This game actually highlights one of the main reasons why I dislike seeing the NTR tag in a game, even if it is avoidable.
It's not an issue with the content per se, different people like different games, and some games just aren't 'for me'.
I am also a firm believer that the Dev should make whatever game they want (just as I will support whatever games I want).
My issue is more technical with the time and work hours.
If a game has an NTR and a 'non-ntr' route, then development time is split.
And as a result, these games that try to appease both crowds almost always end up with issues such as Slowed Releases, Disjointed Story (depending on how much 'common route' leans either way), or a lack of content (which typically will annoy whichever group is underrepresented)
Best of luck with your game Dev, but I think I will skip this game for now, and maybe revisit next year.