The years of lead were a low-burn civil war fought between fascists and communists in Italy. If he's calling it the American years of lead I would assume he is either a fascist or a communist, given he's siding with queer people I would say communist.
With that said I think his tactics are wrong and what people should be doing with 3d printing is designing useable defence drones rather than guns. If untraceable this would be far more valuable.