I think it's absolutely ridiculous that the tax authorities want to force this stuff on people before it's even available on all the important platforms. But the fact that you can actually file a tax return or submit a sales tax advance notification using only a tax number and address (which according to impressum requirements must be stated in that document anyway for businesses!) without any kind of verification whatsoever — that really takes the cake.
Brainless, thy name is tax authority ...
At tagesschau.de - Die Nachrichten der ARD you can find the original article.