I find there is a difference between patriotism in europe (and Canada, where I'm from), and America (where I currently live, and where the author is from). When you go to the average Canadian suburb, and I feel like this holds true for many European countries as well, there are few overt signs of nationalism: no flags, no "God Save the Queen". In America, however, there is almost a competition for who can be the most patriotic, no matter what the person actually thinks of their country. There are american flags everywhere, Eagles and stars and strips on the back of trucks, "God Bless America" on every tanker truck. It's not enough to be patriotic, you have to prove to everyone how patriotic you are, every day. Sure, Canada Day is rowdy and nationalistic, so is Konigsdag, so is Bastille Day, but it's one or two days a year where there is an overt nationalism in the same way that America is every day. I think that's what the author is referring to when he refers to patriotism.
I mostly thought this part was bullshit: (yeah that's an image because for some reason I can't copy the text) No, most European countries don't shy away from patriotism because it reminds us of the Nazis. It's a more sensitive subject in Germany, for sure, but he makes it sound like there's 'MERICA PETRIOT HELL YEAH YALL or no patriotism at all. Some nuance is needed. The same goes for the identity. As much as Europe might want to be an identity, no population calls themselves European above all.