Why do U2 not just dismantle themselves?

Heh heh.. Well, someone had to say it. John Waters, in the Guardian, puts on his flak jacket and points out – in an actually very considered piece – that the new U2 album, the “fourth past-their-best anthology” and “a nondescript collection by a band nearly two decades at the top and desperate not to slip”, “adds up to no more than a massive unit-shifter”