If you want proof that the genre of heavy metal is dead, look no further than the fact that this year's Grammy (which is worthless) went to Tenacious D.
There are real metal fans out there and this should not concern them one bit. When the Grammy's are completely out of touch with what's happening in the real world in terms of the music that people enjoy, that means that the genre itself is healthy and appreciated. Having a satire/joke band win means that the genre itself is safe from the predatory aspects of the music industry.
Those of us who enjoy Shoegazing music salute you for having survived another tough year. Thank God there is no Shoegazing Grammy.