Germans will say they're not very patriotic, but really the way German patriotism manifests is a resistance to outside criticism paired with a stubborn insistence that things ought not change.

I haven’t seen it manifest any differently elsewhere?

Americans on the Internet will often heartily agree with foreigners about all kinds of things that are shit in America and need to be changed: public transit, walkability, health care costs, university costs, money in politics, lack of basic geographic knowledge, etc.

Of course there are some more conservative folks who may be more resistant to those critiques, but the average American will just nod along. If you mention on this website that healthcare in the US can be insanely expensive, you'll mostly see agreement from Americans.