Its quite easy to download any songs/videos illegally. So if somebody puts a video up of an artist without their permission!!!!!
Well, yes , what if ?
What's the worst case scenario ?
The downloader is going to make multiple copies of one song and go to the local fleamarket and flog them ?
I quite see the rationale of pulling bootlegged videos of concerts where somebody has recorded an artiste on his/her cellphone and stuck it on YouTuibe, it doesn't do the srtist any favours.
But, pulling good quality, well recorded videos, seems to me to be self-defeating whichever way you look at it.