There are so many things that people do because of their personal preferences that I personally can not understand but accept it as thier freedom because they do not harm anyone. But, The idea of classifying the content of this event with the childern as a kink is fundamentally wrong. Child molestation is not a kink.Firstly why are we debating the reality of child molestation or what child molesters say. This a fictional game not an actual realty. Why are you bent on the fact that shota or Lolicon kink enjoyers are actually going to commit it in real life. Cause your whole point always hints you are trying to say it gives a wrong message to society or it promotes child abuse. That's just like believing violent games make children violent.
About what child molesters say. They say it to actually protect themselves in from law since no has seen what happened, the truth is completely different where they have molested the child. However in the game you can see it clearly that the children are in control. It's not like things are happening behind closed doors and you have an option to debate that Sophia actually is taken advantage of them. Everything is clear as day for the viewers
Also, The intention of the children is not decisive, because they are not able to make such decisions. That is precisely the point that makes this event so trivializing and thus clearly problematic.