Yeah, pretty much that. Just because those Staates have banned it in administrative formal writing, this is in no Case a generalization for Germany. Just "Freistaat" doing their Thing as opposed to the other.
Also as a Note, that "Verein" has in no Case any inflouence over the course of education, as that is governed* by the "Gesellschaft" as mentioned.
*As in giving recommendations
First thought: e pluribus anus