No one understands honor. I don't mean that they're dishonorable, they genuinely don't grasp the purpose of it. Honor is super useful. Honor is what animals use when they settle territory disputes by flashing colored feathers instead of ripping each others throats out, which keeps them both alive. It's a more successful strategy than pure violence is.
Almost any honor society discards it when they fight people who don't follow the rules anyway. This idea of "big dumb toffs who have big dumb rules but we're brutal and clever so we just don't follow the rules!" is like 90% just based on incorrect takes on history mostly informed by movies. If they know you don't follow the rules they start poisoning your wells too. Now everyone has poisoned wells and all your families die. Congrats!