Bullshit. This is a big precedent where Wikimedia will now remove material from Wikipedia if a court orders them to. They even acknowledge that the material in this case was, if not unambiguously true, at least well sourced.

That's a huge precedent. It only remains to be seen whether Wikimedia decide to fight a similar decision made by some other court, perhaps in a less popular jurisdiction like China or North Korea.

Perhaps they mean that this is not a notable change in the law because Germany is not a common law jurisdiction, and changes to the law happen only through the legislature and not through the judicial system. But in that case the claim is trivial, and still equally irrelevant now that Wikimedia have set the precedent that they will obey courts in these cases.