As far as I'm aware , EU inc would be an opt in initiative meaning that it likely wont change anything in Germany. DE has a a very powerful notary lobby that will oppose this at all costs.

I read that as the founder being able to opt into choosing EU Inc, not that only some EU member countries would offer it.

edit: it's a regulation, not a directive, so it will be directly available in all countries, without each country creating its own laws to implement it. But it'll take until 2028 or so until it's actually be available.