> I have to publish my full address on my website according to German law.

Wherever there's potential for legal conflict, there's obviously a need to be able to find out who to sue. Same issue that worries the intellectual property rights lobbyists behind ICANN.

> As a German

Germany, additionally, is keen on knowing who to prosecute over free speech. Probably now an indispensable democracy management tool after having opted to give up on the "German" part of Germany in 2015, I don't see this going away any time soon.