Nobody is banning anything in Germany.

With bitcoin.de there's at least one completely regulated exchange in Germany where users can even connect their account to an official German bank, albeit a small one. Additionally, people have already pointed out that Bitstamp is licensed in 28 EU member states through Luxembourg, thereby making it entirely regulated in Germany as well.

This is just a Coinbase move who apparently didn't have a license to operate in Germany in the first place.