I think it's a quality record. Nice to see them make a respectable effort. At least they've grown out of fecal album titles and songs about having a wank.
That being said, I do think it's not the "amazing accomplishment" for music that some are making it out to be. It's okay, and that's as far as it goes. Nothing innovative, really. Nothing jaw-dropping. Just catchy hooks and distorted guitars, something way too many bands are making a living on. Green Day just does it slightly better than the rest of the heap.