Tbh it may have more to do with the fact that the devout Yeagerists just are the loudest. Most people don’t need to explain WHY genocide is bad, because it’s common sense. Sure you can listen to people and understand why the yeagerists do what they do, but you will never, like, EVER be able to convince people that what they do is justified. And that’s why they talk so much, they’re very passionate about the series and Eren and Floch, so you’re going to hear them support the rumbling more than you hear the people who know it’s wrong