Agreed. Unless they were having trouble selling tickets, there is no upside to this for A&G. They are the stars. The moment you introduce another (possibly more popular person to the younger attendees) into the mix you take away, possibly seriously, from A&G.
Edit:
After reading the articles I am still confused over exactly how the misconception got out there. However, the more I read about her, the better off I believe A&G are for not having her there. She would have added NOTHING.