The thing with MoS though wasn't quite as much as the needless destruction, it was that Superman didn't do much to stop it and was part of it for that movie. For Superman and what many people believe him to be/represent that he allowed it did not jive too well for a great many people.
Oh right, it wasn't like Supes was on the other side of the world destroying a part of the machine that's destroying the earth itself. He's supposed to be two places at once?
Oh right, aren't the autobots SWORN TO PROTECT EARTH HUMANS /Optimus] from the decepticons except entire cities get ruined and uh...lives are compromised because....surprise attack?
OH BUT HE CAUGHT SAM FALLING OFF THE BUILDING 1345th TIME SO ITS OK
half the people in chicago are dead but ITS OK, WE'LL ALWAYS BE HERE FOR YOU HUMANS BRO.