Actually the writers of that Carnegie Europe article are right.
Whilst it is true as Dr Alf says, that Europe is a collection of nation states and that Germany does not want to strut about openly on the world stage, none of them will be able to maintain this position for much longer.
Europe is like a small boy at school being subjected to bullying but being defended some of the time by an older boy who is about to leave school and go to University.
The day that happens the bullied child will have to learn to fight or find some way to stop the bully.
Rather than get its own people to become more productive and export more to create the funding for enlarged forces and safer energy supplies, it buries its head in the sand.
Things will have to change because the Americans, like that older boy, will not be around forever or be willing forever to go on protecting Europe even as a means to protecting themselves. .