Strawman - I'm not saying this game needs NTR. I'm commenting on your unsolicited 'why would anyone want this'.
So, to repeat: Just because you have vanilla tastes doesn't mean everyone else does. Stop shitting on what other people are into. And IME, usually, the people crying loudest over NTR like guro/vore/harem/rape/young content (at the very least they don't crusade against it) so fuck off with that nonsense. You don't need to take a moral stand every time you see NTR mentioned. PS: 'Patreon' (aka people) often funds NTR content. That's the world you live in. Get used to it.