I wanted to make an ironic, exaggerated comment here, but irony doesn’t really work when it is 100% in line with what these people would actually say.
Change is so slow because this country has managed to form and propogate such a thoroughly oppressive system, that to call it out is to only reinforce what the people have been taught since day one.
These “freedom people” want their privilege so bad that they are willing to keep a monarch/oligarch in office who will perpetuate an oppressive system under the guise of ignorance.
I don’t think there’s anything inherently wrong with being proud of impersonal achievements. If one of your parents did something considered pretty great, I think it’s generally fine to be proud of it, even though you had no agency in being born to them.
As with anything, though, it’s very possible to take it to the extreme. If an achievement or value becomes your entire personality and you begin to actively disparage others on the basis of not-being-that, as you said, that’s when I call it one of the bad “-isms.”
I see nationalism as a range within that of patriotism, but starting at that extremist point.