Germany fear losing 1/3 of its energy supply?
Yes.
Germany isn't out of step, they are in line with all the other NATO countries.
NATO countries/the West made it clear they don't have a vested interest in Ukraine. By virtue of that fact alone, it is not their war to fight. All the talk about a "swift" response from the U.S. is just that, talk. It's rather unfortunate for the Ukrainian people that they are being left to the wolves, but their sovereignty is their own business.