It’s hard to overstate how insane the US was after declaring war on Germany in 1917. One filmmaker was sentenced to 10 years in prison for making a movie about the American Revolution, because it portrayed British soldiers in a negative light
The ME series used to be filled with little things like this
Mysteries never meant to be solved. Little hints that the universe was way bigger than what you were seeing and ideas cool enough to be their own story that Shepard just doesn't have time/interest to look into