The first one I'm ok with, the second one I'm not sure what you're saying? Google suggests the largest library in the world is the US Congress library, but I couldn't find any sources saying it's banned in Germany? (Also, it's a physical place in the US... What?)

Closest thing I could find to library banned in Germany was a collection of pirated material, which was blocked at a DNS level, meaning many users bypass the ban accidentally, and anyone who wants to can trivially use a different DNS.

I mean I'm probably more in favour of digital piracy than the next guy, but I had completely missed that were calling copyright protection censorship now?

He probably means a famous pirating site, called library dot something.