Too bad the Geneva Convention only covers acts committed against living or deceased human beings and not digitized representations of fictional characters, therefore their argument has no merit no matter how much those lawyers are "versed in the interpretation of humanitarian laws".
"Why not use popular Hollywood movies as test subjects? Because they don't involve hands-on interaction."
While the above is true of the audience seeing the movie, it is not true of the actors portreying those actions during the filming process. By that logic, those movies should not be allowed to be filmed as acting out those scenes would violate humanitarian laws.
Of course we all know that is propostrous, because that is just acting, and what they are doing is only make belief and not real, much like the digital representation of fictional characters in a video game.
Maybe they should spend more time and effort going after real people committing real humanitarian crimes in real life, and less wasting their time on nonesense like this..