Most of the so called honor code is assumptions where people project their own personal views on how they want Predators to be than actual stuff that was shown in movies. They hunt for sport to win, they liked killing and challenge, thats all.
City and Feral were hunting inferior prey, potatos, you can jump on potatos on phg and play reckless. Dutch’s team is like my fireteam, you hunt like Jungle Hunter did or you die. You play like a coward and win or you die because we can shoot back. I won’t even get into the portrayal of the aliens on AVPR, Wold only used plasma for most of it anyways.
They were probably so high on drugs they didnt hit a single bullet of him, again potato prey.