Talking about false strawmans. There is a difference between someone that was in a few serial monogamous relations in past, someone that did not want to be in a steady relation since to busy with other things and once in a while picked up a guy for the sex and someone that got gangbanged weekly since a sexual beast and whether those priorities have changed or not since that period in their lives. (whether that person was male or female)
Thing is this seems to be a game about romancing certain characters mainly (admittedly that may be a wrong impression
). If so the consequence of the choice of the devs to add those flashbacks is that for 30-50% of those more romance players, they can stop to develop a romance path with the aunt after those flashbacks, for most of them it will be hard to see her still as a valid romance interest and only a big change in her character and priorities later on might salvage that, but then why portray her as a sexual beast in the first place.
Basically consequence of devs choice (which they have every right to make and I am not saying remove it) is that for many they removed the aunt as a romance character to satisfy the fetish of some others. Now if the focus of the game is to satisfy those fetishes more as have romantic relations with the main girls, that is fair enough. If not you are chasing at least part of your core audience away with adding hated actions for them that do have an influence on how those characters are perceived in game.
Also as a dev you cannot have your cake and eat it, choices are theirs to make, but they have consequences.
