You forget that it's not that they want to be heard on the other side of the line. They just want to mark their presence here. Therefore the reason for shouting, otherwise they would never stand out of the crowd, and the reason for the idiotic driving while yelling or nobody would realise the tasteless tuning of their Nissan Patrol.
Just as i apprehend a flight full of barking locals, i am just as scared of a flight full of annual leave taking Philippino maids, if it tends to be too cheap to yak inflight.
Maybe it will show to be a hit with some, but it will certainly drive away Europeans, Ozzies and Americans.
But does EK still need them?