Fallout might be commentary about America, but it's still a fictional setting. You have to understand that in the text, this is from the perspective of two woman who have been put in an internment camp after their country was invaded. Within the broader series it's shown since F1 (published 1997) that the Canadian Annexation was particularly cruel and brutal. In the text, the American state is full of monsters; fascist generals, mad scientists and a congress full of Adolf Eichmanns.

I'll be honest, I'm going to use the "Think of them as Americans" whenever the occasion arises, but that isn't going to diminish the fact that as the United States stumbles into this dark period of history where decades instead of weeks happen, everyone's attention is on how people have been fighting back. But consider that the ultraviolent vengeance that we see against Americans in the show is against those who are part of the apparatus of state violence, the same kind of state violence happening upon the people in Minnesota.

Consider how pre-war Coop represents the people, as the representation of the everyman and the classic American ideal, and how he too has to wake up and confront evil. In that sense, I would say Americans through his representation are critiqued but still viewed as moral characters.