Echo chambers are echo chambers, no matter the platform. As the voices grow, it gets louder. Just because it's an alternative to the mainstream, I wouldn't consider the members here smarter, more enlightened or savvier as a whole. Lemmy just got louder, that's all.
Their wiki is amazing but if I had to be a part of the Arch community to use the distro, I would give it a hard pass. They're toxic AF.