The value of “national pride” really depends dramatically on the nation-state project we’re talking about, ethnic background, and so on. For example, the US conception of national pride is based on being a genocidal settler state. There isn’t really such a thing, now or in history, of the US as not being that, so national pride in the USian context circles back to being proud of being a colonizer and justifying everything that follows from that.

I don’t know as much about Germany to speak on it in detail, but it’s my understanding that national pride was a significant part of the fuel behind the rise of Nazi Germany. If this is the case, it makes it very problematic for German socialists to turn to that. Let me be clear though, ethnic cultural distinctions can be a different thing. If there are ethnic Germanic peoples who have an identity there to care about (and if it is one that is distinct from the institution of white supremacy or other such garbage), that might be something to pay attention to, but that does not necessarily have anything to do with Germany itself as a nation in its current form. Ethnic identities aren’t necessarily the same thing as nation-states.

Where exceptions tend to be made for this in the socialist context is when we’re talking about colonized or imperialized peoples who are having their identity (often an ethnic one) crushed under the colonizer or the imperialist and so it can become actually necessary to embrace ethnic identity and culture in a form backed up by organized state power, in order to shake off the embedded colonial/imperial elements, else they face a kind of erasure. Germany, as far as I know, is not like this at all. They are part of the western empire and the closest they ever had to an alternative was the “East Germany” socialist project that fell. Their culture, like many western ones, is subsumed by the institution of “whiteness”; and until that is shaken off, they cannot begin to contend with what ethnic identity looks like beyond it.