I know this really surprised me too. But I also feel the groove has been lost because Tommy is now forced to play to a click track in his ear. ( remember that clip where the hats start and he isn't playing?) Def Leppard does that too and it just sounds Boring as f-ck. Tommy used to drive those tunes as he played around and with Mick. That created musical tension. Metronomes are for people who suck AND use backing tracks live and that's what these guys are doing now. Because if you are live, those backing tracks ain't always gonna be on time...unless, you use a click. The click is robbing us of the music we like. Think about your own bands...when I drum, me and the guitar player sort of play around each other and when one slows down or catches up ever so slightly, it creates that feel. These songs have no life in them anymore.