The choice in the beginning does matter and is a persistent ... now, if you mess with it in different saves, you will get different results. Did the girl service MC in the alley? - Yes - proof of out of chastity; Did you go along? - Yes - proof you want to see the slug; Did you wake up shackled on a mound of human remains? Yes - this means you get to run or stay and get the scene: which is exactly what it is supposed to be. The original vision or the futa on roids version.
Futa in everything is just boring to really creative people like this dev, so if you just want to stifle his creativity and force futa on everything, even in parts where the dev did not originally write or render the game that way - which is messing with the futa slider, despite it being in the middle by default so you can see the original vision of the dev, is totally on you.