Not attributing it, it's just a sign of what can and will happen more frequently, and more easily, for less of a 'crime', and all of the subsequent things that can happen to other sites who use sites deemed bad.
As a former radio DJ, many record labels sent me promos and radio albums through MU, I know there are other platforms for doing this, but any one of them can have the same happen to it. You let people upload large locked zips, they will abuse it.