I make no comment other than that they couldn't keep the lip syncing goingand i didn't watch it all the way throughbut yes, it is the way it is because they are the way they are; but also, because of he who disseminates the media.  in this case, a dude named Nick who compiles this video and other "viral" videos on CBSnews' blog.  

http://www.cbsnews.com/videos/aussie-girls-recreate-bohemian-rhapsody-car-scene/

Caught in a landslide, no escape from reality.