Yeah I saw that too. I don't think YouTube should count as a pirate site. A lot of the copyrighted music videos and songs that are up there are put up by the labels themselves. And YouTube tries hard to remove everything else.
I had to taken down one of my videos I posted 3 years ago because someone made a complaint about the music I used. There was a whole bunch of stuff I had to go through if I wanted to keep it up but I said fuck it and just took it down.