Making it clear that I'm not a fan of NTR. But i like lesbian NTR and lesbian voyeurism. And my favorite genre is male MC fucking them all (girls/womans).
One of the few avoidable NTR games I play is "The Tyrant". And on the corruption path. No romance path with NTR/sharing. For me. There's a lot of MC content with the girls (The Tyrant). How much is NTR? I do not know and i don't care.
If you, llamamann, like NTR or voyeurism with male NPCs or sharing, or gay or futa, do it.
Be clear about the content of your game (Dev Notes in OP). If avoidable. If skippable. If unavoidable.
And few players will complain. Who doesn't like it, put the topic on ignore and look for another game.
I'll give you an example of a popular DEV. MrDots. Optional sharing path in DMD v0.29, which broke the daughter's personality for "romance players". 3.900 subscribers 6 months ago. 2.700 now. Patreon page (Sunhine Love) is stable.
Your game, DEV, has no romance. So your fan base shouldn't be that sensitive. But NTR, "voyeurism peep on male" (technically not ntr), gay and futa is useless for many male protagonists players who has zero interest in dicks. The only useful dick is the MC's dick, "my dick", dick of the player who plays as the MC.
If NTR it's 10-20% of the game, and avoidable, you shouldn't lose as many "non romance players". If your focus turns to "too many dicks", you change your target audience. Gain new patrons. Lose the old patrons. Decide your target audience and be as clear as possible.
