I also think that this "post" comes from a troll. I have reported it as spam.I think this is pretty insulting, also for the people who put effort into translating the app:
"That's why everything is completely in German unity and justice and freedom for the German people and nothing further are you too stupid or do you create it nichal German programs for the German people. poor performance"
Google says this review is not violating the Play store policies. WTF.