It does not require total control or even partial control of information.

There is a ban but it doesn't mean the german government goes out of it's way to remove any piece of such material before it even hits the internet.

It's largely post-factum, when the piece is already on the internet and spread elsewhere when the original author of the information is punished.

Sure, but is it a binary thing? Either zero control of information or total control of information and nothing in between? That seems wrong.