When you look at that map, you'll see the main cities being covered, but only them. Even rural Romania is mostly covered, while Germany is almost as blank as Bosnia.

Berlin at least still doesn't appear to have any significant added coverage over the past decade. Yes, there are pictures uploaded by users. But the Street View picture seem to be old. In Germany looking at taxis is a good way of telling the age of a picture. All the Street View pictures I clicked on have pre-2010 models. I'd thank they would update the touristic areas or city center first but they seem just as old.