I still don't understand what that means exactly.
> whereas Project Gutenberg has zero connection to Germany.
I disagree.
> what does the nationality of Gutenberg the historical person have to do with anything? Is shakespeare.com subject to uk laws?
There's a lot inbetween of
zero connection with country X
and
subject to it's law.
So regarding shakesbear.com: No, not necessarily.
No, there isn't. Or are you saying Austria could have a greater claim of jurisdiction over Tesla because of its name?
Germany has no more "ownership" over the German language than England has over English.
a) anything in the German language falls under the jurisdiction of the German government, and that
b) a relationship bearing on legal jurisdiction between two otherwise completely unrelated entities can be created by otherwise unrelated third parties?
Nope:
"In order to determine whether such a controller or processor is offering goods or services to data subjects who are in the Union, it should be ascertained whether it is apparent that the controller or processor envisages offering services to data subjects in one or more Member States in the Union. (...) the mere accessibility of the controller’s, processor’s or an intermediary’s website in the Union, of an email address or of other contact details, or the use of a language generally used in the third country where the controller is established, is insufficient to ascertain such intention" (emphasis mine)
As long as German is used in the country where PG is located - and it is - then it's not enough to show that they're targeting German citizens.
b) What do you mean exactly?