The idea that national governments should not work for the good of their citizens is propaganda.

Are there governments that aren’t heavily nationalistic in wartime?

Not for long.

It may be nationalist, but not because it's showing American industry and agriculture. All nations have an intrinsic self-interest in such things... there is no nation on Earth now or in the past that would take the stance which you imply is the only acceptable one - a disregard for their own productivity, wealth, and self-sufficiency.

What, by your definition, would not be problematic?

And, why would anyone like it?

Do you get this way about signs in restrooms telling you to wash your hands? Americans fall for that trick constantly.