Careful throwing that stone 'crybaby' around mate.... one could argue its "crybaby" NTR fans crying over there NOT being NTR in a game being more of an issue than people "crying" over its inclusion.
Then consider that, from what I've seen, many games that originally weren't intended to include NTR from the start seem to die quickly, whether from the author losing interest in pandering to a fetish they don't like; or because Patrons stop paying them and the author stops working for free.
In this case, since Belle's working without a Patreon (or afaik similar funding), and she's mentioned that it's not her primary goal beyond branching, so... yeah, you can 'cry' all you want, but NTR isn't going to be a major part of this game. If you don't like it, go write, program and release your own game instead?