Indeed. The prospect of Standing on the 3 rd belay of siren/HF while folks are wandering around setting up a rap directly above with piles of stones sticks dead lizards and random other debris is quite alarming.
I can see the logic in a couple of rap rings maybe at that belay especially if a large party gets into trouble or hit by a storm. But if they are all on top the safest way off is via the track down the gully behind not abseiling down and across one of the highest traffic multiple pitch areas at arapiles - with a rope snagging flake to boot!