Do you consider any instance of taking pride in your country - including small remarks pointing out trivial coincidences - as nationalism? Do you disagree with any example of recognizing the existence of a nation-state and it's relationship to individuals?
I tried to phrase these questions without snark, but your comment genuinely surprised and confused me. Maybe I'm misunderstanding. I do see how OP's comment is a bit nonsensical in light of the author's Swedish origins, but I don't think this justifies your invocation of a term with such negative connotations.
Pointlessly injecting a remark relating the birthday of a project to the "great day" of 4th of July is absolutely america-centric and presumptive. By extension I view it as a definite case of nationalism.
I tried to phrase these questions without snark, but your comment genuinely surprised and confused me. Maybe I'm misunderstanding. I do see how OP's comment is a bit nonsensical in light of the author's Swedish origins, but I don't think this justifies your invocation of a term with such negative connotations.