I heard a sample of their new music... don't they seem a bit more "dark" nowadays? I mean, listen to their old music, then compare them - see if you don't notice a difference

They aren't as open to announcing Jesus Christ to the crowds, as they were when they first started out... such similarity to POD and other bands when they became popular and sold gold.
Don't get me wrong, there are a few good bands out there that keep it genuine even when they do make millions (and give it to World Vision because they're not greedy) - but you know what they say - money changes people