I love John Oliver, and he has a great way of explaining a complicated situation to an audience as if they knew nothing about something. Why else would they allow a British man go on HBO every weekend and tell Americans what's going on in their country?
That being said, a lot of what he says is a bit oversimplified to not exactly fit any type of narrative, but to fit the time constraint. His program is divided into 3 parts; the first is quickly going over some highlights of the past week, the second is to have a longer segment on something in recent news, and the third is a much longer segment that a lot of the times is something happening that the US doesn't know is happening (either globally or nationally like an insurance scam of some sort).