The problem with this method is that as soon as you get to the second child, all the others are infertile.
There exists a trait called Debauched that decreases the chance of infertility by a set %.
It also has three ranks. 20% at Rank 1, 40% at Rank 2 and 60% at Rank 3.
The developer really wants to scare off the people who like to play with incest, it's been 2 times that he removes it for me so there will not be a 3rd time. the game is definitely blocked on my side.
Patreon demanded he remove it, and that's where most of his money comes from so it's unlikely he will re-enable it by default any time soon. One version had it enabled by mistake that Patreon found quickly enough and warned him about it happening again, iirc.
Incest can be easily re-enabled easily. Just make a blank file called imma with the extension .degenerate in the same folder as OBF.exe.
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I just noticed that the wiki says that the Divergent trait has been removed but I know for a fact that it hasn't.
The weirdest thing is still the removal of Grungy. What purpose does Romy serve now?
Going through files I found a trait called "Euphoric" that isn't listed at all in the wiki. It also doesn't seem to work properly.
It's supposed to "use all lust at once" but this doesn't happen.