She was not dancing, she was giving Mick Jagger performance teas. He's one of the most over the top rock performers of all time and that is what she was doing.
Meanwhile, your fave had to pay $40 to watch her on stage with them.
Not liking a performance doesn't make you uncultured, how silly
This is a rock and roll show. This is the way you sing rock and the dancing was very 60's! Educate yourself. This is not a pop show, where you have to deliver some kind of choreography!