I really, really, really, REALLY wish this were not the case but as I am listening/watching the PCUSA's General Assembly I can always tell who is a Youth Advisory Delegate before they declare themselves to be just by the inflection of their voice (read: valley girl). So far there have been no exceptions. I will let you know.
UPDATE: I by no means caught all of the debate but from what I saw two YAD's - one from Cayuga-Syracuse and one from Milwaukee - broke the trend
And a special thank you to reverend mother who turned me on to the GA's video livestream which is a very specific mind-numbing, torture device... and yet I can't turn it off.