This isn't supposed to be a Monty Python sketch or a nuanced satire. This is supposed to poke fun at the ultra patriotic Bro dude history that people homology together into our past. This is the version of America where Lincoln rides a grizzly bear into battle on a t shirt. It's chock full of references and humor and while not perfect I found it ridiculously entertaining and I'm a historian. Just don't take it so seriously.