@gwit I still think this is exploitative language to refer to media which might contain taboo themes (I'm not even sure this particular game is actually that provocative), but you know what, I'll let it pass for argument's sake.
If you read one of the citations I put in that post, I make a pretty thorough argument about how porn is not really a big deal. I could add additional ones. I think that is a good place to get started.
Honestly, you could make this argument about a whole bunch of things.
Let's say an actor is paid to play-act a rape, or someone draws an imaginary scenario. Or what if someone draws furry art, this depicts bestiality, does it not? These would both be things which society frowns upon.
That said, I don't think someone should censor fictional art which might involve either of these themes. Also, while you might think that I'm pulling this out just to talk to you, I have actually seen this very argument involving bestiality in the wild. It's not hypothetical.
Such a setting would be purely imaginary, divorced from reality, it's not the same as someone being victimized by someone. It's also likely to be quite fantasy, and I doubt someone is even comparing it to *that*. Typically, it is an outside figure who projects this sort of thing onto that. In fact, even looking a certain way, can be enough to get treated as "abuse" by those who lean towards doing so, again, it's very likely a fairly fantasy scenario of absurd things someone wouldn't want to do.
The "validation" argument (which I'm not quite understanding) doesn't make much sense to me. Does BDSM "validate" biastophilia (essentially rapephilia) because it has coercive attributes to it? In any case, I don't see how having some fictional media would suddenly make child abuse a "valid" thing. I think it is pretty straightforward why abuse is an awful thing. Even in the United States, where freedom of expression is protected by the First Amendment, such acts are viewed with the utmost disgust and hatred. It's hard not to see how awful it is.