I know it is not a popular opinion to have on Slashdot, but consider that without copyright we would not be able to have professional actors or musicians or authors among others.
Says you. I kind of agree with the implication that Kim knew he was on shaky legal ground and didn't really give a shit, but your assertion here is just not true - or you are at least going to have to back it up with something. People would still need actors and musicians, with or without copyright. Plenty of professional musicians make a living playing out of copyright music (most classical music). Most actors are reading someone else's words.
Perhaps you meant that music, TV and books might not exist? But even that isn't true - things would just work differently. Maybe it would be better. Maybe more people could make a living rather than those at the top taking the biggest slice (I don't know, when have we ever been offered another way). The value just wouldn't be in the 'creation process' anymore - it would be elsewhere in the chain.