I consider his works to be some of the most pristine looks into 70s America. No rose-tinted glasses, no media filter, just straight up raw. It's real fucking neato in the sense that he seemed more interested in looking at how things were rather than how people wanted to think of them. Even his later films like American Pop and Cool World still drip of it. They have their problems and aren't exactly the best movies from a narrative standpoint, but in a way that sort of adds to the fact that they're untainted time capsules from another era.