This poll is not a good idea at all. It is framed in a way that makes it a sort of public negotiation about the moral character of Vivian, and this is exactly what is happening here. It is a way for the author of giving up responsibility, like saying: it's not me, I was reluctant to make her a "whore", I didn't want that, you wanted it. It's a way of introducing player's choice through the backdoor in a game which doesn't wanted and needed it. I thought it was all layed out in the beginning, all writing finished.
Everything should be solely about the consistency of the story, not about the moral image of one character and hurting the sensibilities of readers. Both things get mixed up here. If she is "selfish", so what? The dev says the scene was in it from the beginning - so what exactly changed? If the scene is written well - why shouldn't it be part of the "emotional development" of Vivian? Nothing is "degrading" if it is written well. It's not a question of her having more sex with more people, it depends on how she gets to that and what motives drive her to that. And this behaviour is well within the range of what we have seen so far. Her search for gratification is urgent enough, her confusion is big enough for that.
As a reader I'm not interested in a product other readers have decided for me to see or not.