I haven’t looked further, if it is the case here, but social adequacy is a thing regarding evaluation of videogames since a few years: usk.de/usk-beruecksichtigt-bei-altersfreigabe-von…
Sure, nobody should allow a game where nazi culture will be praised. But if they are allowed as bad guys, e.g. in Indiana Jones movies, it should also be allowed here.
Beside that, the Doom example and their argumentation in my last post is a real joke (and in my opinion symptomatic for the whole censoring arbitrariness).