You do understand that it's make believe, right? You do understand you are on literally on a website dedicated to "adult" games, 70% of which revolve around incestuous themes??? I don't know why you're deflecting so hard. It's obviously clear what the intention is no matter what pretty words you choose to cover it up. From the parallels of the bible art of the daughters seducing their father that you allude to several several times, to Brooke saying she wished her father had been so open to talking about erotic art (if you tell her you talked about it with the girls), to Zara being perfectly OK with wedding you to them because she relates to wanting your own children, to the old diner lady saying "You should love who you love.....unless it's family. This isn't Alabama" and the oldest looking sad/disappointed. Speaking of the oldest, she goes on several times about how guilty she feels for feeling the way she does and how she knows it's wrong, (or later when she says she knows it's wrong and doesn't care), and it's very clearly not because she's afraid she'll mess up the dynamic of the household you have, lol.
OR even with your late wife saying that she's left pieces of herself in those that are still there, obviously alluding to her daughters (including how much they look like her).
I did change my words around to be more platonic than familial, but it's 100% obvious what the intention here is no matter how much you obfuscate it. Especially because there are parts that don't really make sense when you think about them in non-familial ways.
And it's fine for it to be. Just own it.
I assume you also know that you are under no obligation to play the game?