My son attended the 2010 Jamboree. He had a great time and was quite overwhelmed by the number of scouts. BTW he did not earn a single merit badge. He met scouts from around the world and from all over the United States, which he still keeps in touch with today.
He is attending the 2013 Jamboree at the New Sumitt as a Trek Guide for the OA and is looking forward to it.
If you don't want to go because you are sure that you preconceived negative notions are correct, or for whatever reason, there is not need to insults it.
BTW he has been to Philmont and also worked at Northern Tier. He enjoys backpacking the most, but thinks of the Jamboree as a totally different kind of experience, not better or worse, just different!
Whine on!