As a more detailed explanation of how I see it, yes it's a case of how far you go according to path(s) & choices. That being said, from my POV, this renaissance woman having her own inexperienced offspring's fully erect penis inside her is, the ultimate degradation, i.e. as far as she can go. That, for me, is when she becomes totally irredeemable, (rather than as a sex slave, slut, prostitute or whatever, all of which have as much erotic appeal to me as a rotten potato). It's a happy ending for some but will never happen anyway because if it is, as many have assumed, to be promoted as some sort of climactic act, (pun intended..... Dylan's not Sophia's), it's likely to be at the end of the game, currently on track to occur in the early 2050s.
I almost hope that it will happen & repay the loyalty of the fans of incest. (I won't be playing it, so I'm not moralising). I also want to see the 12th task & what happens afterwards, even if it ends up as something of an anti-climax, (weak pun intended). At present this is due in 20 years time or less, e.g. after this update the next task won't be due for at least another 2-3 years.
Realistically, there's no chance any of this is ever going to be seen. L&P's by-line should be, "How long can this last?"