I don't think you get my point. Let me phrase it like this: The coach's job is to get the most out of the player material he has. Germany has great player material but there have been many teams that edged us in this aspect during Löw's time. That's not downtalking the team, it's just realism. And it's also a fact that no other team was as consistent as we were apart from Spain.
So you can have high expectations all you want, there are multiple other countries you could write the exact same things about. But those countries performed much worse than we did. Now you can say that all of them were coach incompetently or that Löw is the one-eyed among the blind. But it's beyond doubt that the German national team during his stint is one of the very few teams which consistently fulfilled the expectations, like it or not. Why do we think that this has had jothing to do with the coach? What's the distinguishing factor if not the coach between us and other nations with similar preconditions?