I can say that at least your scene can add some dynamic to the story but...
Well, you know, many guys here already counting dicks in game and complain, that because there are more scenes with dicks than with pussies, the game is about gay stuff. And your scene will just make them think that they are right (of course the not

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It's a very good question! Dev never post this directly but he gave some hints that yes, Sofia and Dylan will have sexual content. Moreover, content of specific scenes will depend on Dylan's attitude about Sofia's interactions with other boys.
Still, I wonder how dev will add any direct incest content into game and avoid problems with Patreon.
Dev didn't forget to male sex scenes, he has a Plan! Or Script! Or Idea!
Actually, he said that he has a written story for 30 playable days and there will be sex, lots of sex, but later. With Sofia's hubby - in next update. With others - somday, because " For the filthy path: it's a gradual depravation process of the MC. "