I found it really authentic because everyone was totally bought-in to the camp. The things that would have been camp were part of these people's lives, and there was so much attention to detail in how they spoke, moved, dressed, and acted that it sold the whole thing as real people in a real culture living their lives. Like the war boys weren't dumb, mindless thugs throwing themselves to their death for nothing like in an 80s action movie. They took time to show how they were devoted to Joe, they had religious beliefs, they genuinely thought of themselves as heroes fighting for a worthwhile cause. They invested the warboys with so much depth and character that I, at least, never thought they were silly. These are warriors from a warrior culture who have their rituals of war, their symbols of valor, their pride, their pathos. When the one guy takes a bolt to the head and his buddies are praying for him to get up so he can die as a hero there's just so much realness in that moment.

And for me, personally, I know a little bit about guys like General Butt Naked in the Liberian civil war, and some other pretty out-there gangs and warbands and mercenary companies, so a lot of the "over the top" elements were recognizably similar to things that warrior cultures do in real life.