We do not forbid it, but advise against it if it can be helped. There isn't a German "Limit Theory Forums" as far as I know, so naturally German-speakers have to come here rather than somewhere else. We're not going to turn them away.
At any rate, Cornflakes dealt with it well.
I'd welcome ReaperFry, but unfortunately I don't know German well enough myself to do so.
Now that the questions have been answered, I'm going to lock the topic as per forum policy.